ExtendSim 7 Patch Enhancements

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Fix in ExtendSim 7.0.6a
Released November 14, 2009

Note: The only change from 7.0.6 to 7.0.6a was made to the Rate library.

Rate library

All Rate library blocks

Corrected a typo in Rate library blocks that caused an incorrect display of Total Flow In and Total Flow Out parameters in the Results tab.

New features and fixes in ExtendSim 7.0.6
Released November 2, 2009

ExtendSim Program

	Fixed drag and drop so it won’t add spurious LF characters.
	Link structure messages now include a Table_Sorted message to inform a linked block when a table was sorted.
	Infinity column tag works better in string datatables.
	Column tags could sometimes get confused when the table was scrolled horizontally.
	No longer a chance for a crash if the structure window had an internal error calculating the number of include files.
	Appending labels to datatables or popupmenus sometimes behaved incorrectly with empty strings.
	Open Dynamic Links command now works correctly if the front window is an h-Block worksheet.
	Poking data directly to a Global Array now works correctly.
	Sometimes a spurious message about not being able to find the SDILoader.dll would appear. This has been corrected.
	Calling ListGetInfo to see if a list exists would sometimes produce a spurious message.
	ODBCCountRows included spaces in an internal ODBC Query that caused errors in some drivers.
	OLEDBResult functions well with Excel returning a single cell or when a range of data is returned.
	Fixed a problem with picture names in the extensions folder that were longer than 15 characters. Names can now be longer. (Up to 255 characters.)
	ClearBlock function now sends the DeleteBlock message to the block (and it can be aborted, if desired).
	Hide/Show dialog item refresh behavior improved.
	GetDialogVariable and SetDialogVariable now respect links for parameters This will also correct dragging linked parameters to the optimizer block.
	PopupMenu functions that take more than one string will now still work if the first string is empty and the second has content.
	Connector messages now allowed in AbortSim.
	Prevented loop when more than one parameter was linked to a random database cell.
	Added missing DB Address format conversion when writing to a string field.
	HBlock updating does not send spurious disconnect and connect messages.
	Debugger now aborts correctly even if not during a simulation.
	Fixed crash in ConnectorLabelsSet() if number of labels was too large.
	ModelSaveAs function now deals with path strings longer than 127 characters.
	Linked lists with string elements now deal with strings longer than 127 characters.
	Cloning dialog items is now functioning properly in the Macintosh version.
	On Mac OS 10.6 (Snow leopard), the application will no longer ask for your serial number each time the application is launched.

ExtendSim Database

	Database viewer pane is more efficient in its redraws as it now only redraws when visible content is updated.
	Checkboxes in datatables now deal better with novalue values.
	Appending labels to datatables or popup menus sometimes behaved incorrectly with empty strings.
	Headers tag information is now being copied correctly when creating a datatable clone.
	Using the Database menu item to import a database over an existing database now correctly preserves linked cells.
	Now allows huge number of parents in parent selector for child fields.
	Now allows replacing an existing child value with “Not assigned yet”.
	Added missing location parameter to some database cell distributions.
	A call to DBRelationCreate() can now replace an existing relation correctly.
	Trying to sort the same field twice during the same sort call causes an error message and not a crash.
	Table names are now not case sensitive in the last character.
	Fixed Database memory leaks.
	Fixed spurious FIELD_MOVED notifications when clicking on a field in a database and not moving the field.
	DBDatabaseOpenViewer() now correctly opens the DB Viewer if a table is supplied.
	No longer sends messages for each cell during an import. Messages are sent only once at the end increasing speed.
	Database Named Distributions that were not empirical are now updating database cells correctly if they were changed.
	Importing databases from the menu now correctly maintains links if it replaced an existing database.
	Read-only fields now work correctly with checkboxes and other editable column tag types.
	Database table names now are not case sensitive in the last letter.

Include Files

Activities

Added argument checking for the random distributions delay.

Attributes

	Removed obsolete reference to MaxAttribs.
	Added the REPORT_DB_VALUE option to Attrib_GetVal().
	In Attrib_ShowNewAttribMsgBox(), changed how the procedure responds if the user clicks OK with nothing typed for a name.
	Added "_Animation" to the list of attribute types so the animation attribute will return column 0.
	Added constant REPORT_DB_VALUE is 6;

Equations

	Added another argument to Eq_Calc() specifying whether static variables should be restored. In certain cases, such as an instance when Equation (I) is controlling a downstream blocker, Eq_Calc can get called via "on oVarsOut" more than once per item because the downstream blocker can send more than one message per item out its select connector. Consequently, static variables can incorrectly be changed more than once. This is why we would restore in this case. The change was made to make iVarsIn_GetConInfo() and oVarsOut_GetConInfo() more robust.
	Corrected how Equations were calling ConnectorLabelsSet() with the third argument incorrectly and the usage of "numRow" instead of "numCons".
	Fixed the bug the would occure when using "open developer reference".

Item library

Activity

	Enabled db address attribs for the 'use attrib for delay' option. If used, this option will do a read from the database.
	If a model is using an on/off shift and if the model aborts during OFF, must restore maxLength_prm to original setting.
	Added enhanced shutdown error message.
	New code added to capture additional opportunities to get upstream items.
	Added call to MoveItems() in ShiftSchedule so that items ready to move will move before going off shift.
	Added exception handling in GetItem() if delay for item = 0. If delay is zero, then the calendar date conversions used to get a doneTime can lead to negative done times.
	Number of blocked items wasn't getting updated in SendItem() when the item got pulled.

Batch

	Items are now being disposed properly when they are being matched into a batch.
	SendItem does not send wants if an item is pulled from the output connector.
	Changed GetBatchQuantity from integer to real. If the batch quantity was a novalue, it was getting converted to an integer.
	Added initializing First and Last at con attribute values. If both were blank, it would use an old value.
	"Show connectors for item count" has been changed to "Use quantity input connectors".
	Added pull of all non-delay kit items before the delay kitted items are pulled in.
	Turned off link messages on open model. They are only really needed when the dialog is open. This greatly reduces the number of link content messages received. Also turned off linking for properties table. That just won't work.

Catch Item

Added reentrance flag to detect if this block is in a message loop. This stops the messaging if the block receives a want from the output and it is already processing the same message.

Convey Item

	Fixed problem where setting fullOut was checking the wrong EntryOpen connector.
	Changed reference from "Speed_or_delayIn" to "SpeedIn".

Create Item

Added argument checking for the random distributions.

Executive

	Removed obsolete reference to MaxAttribs.
	Added an option to write continuously the last calculated lp to a text file.
	Added call to SLClear() in "on Delete".
	In "on attribRename_btn" added call to BuildAttribNamesTable(). This is needed if you have renamed the attribute so that it should now appear lower on the list of attribs.
	When a decision variable has been calculated and the result is 0, then the variable has to be excluded from the constraints.
	Removed turning on event connector in on connectionMake. This was incorrectly turning on the event connector when the count connector was connected.
	You may now properly delete a database linked string attribute.
	Fixed bug with attribDelete_btn and attribRename_btn.

Get

For backwords compatability, write the value from the first row of the "if no item, use" column to initializeGetValues_prm.

History

	Fixed time units in the data table label.
	During array resize, bypass linking to dynamic table if it is currently linked to a DB table or GA.
	You will receive an error message if you try cloning the history table to interior of a hierarchical block as there is currently no way to create a clone from the History block to the inside of a hierarchical block.

Queue

	Added check to setup dynamic arrays if necessary.
	Corrected item reference for 3D object when 3D is in quickview mode.
	Added check to make sure that resources were being used before accessing attributes to reference the resources.
	Fixed PriorityOut connector if resources are used.
	Assigned CurrentWait_prm to SysGlobal8 earlier.
	Replaced resourceAttributeIndex with AttribColIDsNumResources. resourceAttributeIndex was not initialized correctly and the arrays have duplicate functionality.
	Reverted the change from January 7, 2009 because the change from August 13, 2008 had already fixed the problem.

Queue Equation

Fixed "_Attrib last item to exit".

Queue Matching

Length connectors were only updating when animation was on.

Read(I)

	Made large changes to DB_GetIndexes() to make it run faster.
	Changed DB_Read() to increase performance.
	Moved checking of field type to DB_GetIndexes() to increase performance.

Resource Item

	Fixed problem where additional units of a resource could be created if two 0's arrived to the NumResourcesIn connector and the Resource was in use.
	In itemOut when receiving a Query msg, check to make sure it's not off shift. If it is off shift, items are now available for release, so it must return 0.
	Utilization was not taking shift status into account.
	Changed the condition for sending items so that it will work with a number based shift as well as an on/off shift.

Resource Pool Resource

	Fixed problem where the number of resources was not changed to the correct value.
	On SHIFTSCHEDULE events, fixed the calculation of change to pending resources to be ONLY what can't be released at this time.

Select Item Out

	Added reentrance flag to detect if this block is in a message loop. This stops the messaging if the block receives a wants from the output and it is already processing the same message.
	Added support for query messages coming in through the output connector.

Select Item Out

	Random selection to turn off locking random path if "Item will try unblocked outputs" is on.
	Problem where priority output pulling an item through with predict_chk turned off could orphan the item.
	Added additional check to see if other output connectors had a better priority if an item is pulled through.
	Added Sending flag so that a message from the select connector would not try to send an item if an item is currently getting sent.
	Added animation of item in the block when animation is turned on and off.
	Fixed problem where item could get stuck if in connector priority mode.

Shift

	Removed automatic sort at the start of the simulation. This was causing problems if there were blanks at the end of the table.
	Removed condition checking if currentSim == 0 so that the list of blocks referenced by this shift is exactly the same for every simulation run

Shutdown

Changed the behavior of UV and DV connectors- basically they now update SD_ValueOut immediately if there's a change.

Throw Item

	If the block number has changed, AnimateLabel will no longer dipose NextLabel and delete a link within an Hblock.
	Added reentrance flag to detect if this block is in a message loop. This stops the messaging if the block receives a wants from the output and it is already processing the same message

Transport

Added return after rejects in on item out if block is off shift. This prevents items from getting pulled out of block if the transport is off shift

Unbatch

	If preserve uniqueness is selected and there are more items unbatched than were batched, the attributes copied from the preserved items now work correctly.
	Turned off link messages on open model. They are only really needed when the dialog is open. This greatly reduces the number of link content messages received. Also turned off linking for properties table. That just won't work.

Workstation

	Moved initializing resources to stepsize so that this will occur before the initsim in the resource pool blocks.
	Moved taken message to before doStoreItem so it will occur before the output connectors are updated.

Write(I)

	Made large changes to DB_GetIndexes() so it will run faster.
	Moved checking of field type to DB_GetIndexes() to increase performance.

Value library

Command

	Added an option for which initialization message to send the command.
	Moved the execution of sendCommand from FINALCALC to ENDSIM.

Data Import Export

Fixed sequential worksheets where the name does not end in a number.

Equation

	Added code to support the calculation of the next event in a bunch of different places.
	Time elapsed now shows the time since clearing statistics, not the time from the start of the simulation.

Mean & Variance

	If a clear time is specified in the dialog, an event is now scheduled so that the clear occurs at exactly the event time.
	Removed DisplayConLabels function. This was left over from an early beta release. This functionality has been replaced with the setConLabels function.
	Fixed a problem with moving average.

Optimizer

	Dragging an empty data table to the Optimizer no longer causes a problem.
	Using all rows in the Variables table no longer causes a problem.

Random Number

	For empirical tables where values are stepped, a problem with array size not growing as needed has been fixed.
	Parameters for distribution are now not checked if any inputs are connected.
	Revised getNumber so that messages are sent out other value input connectors if a message comes in one of the input connectors.
	Revised label of Location in input connector.

Read

	Fixed condition under which DB_RelatedWriteOptions_pop was enabled.
	Added user prompts to provide a user with the option to continue or abort after detecting a deletion error on linkStructure change.
	Added new validation logic for user selected Record ID.
	Made record index checking more stringent in on LinkStructure.
	"resetIndexes" argument to DataOutSetup() because there was a situation where a user wanted to right subset of a column, but block was getting reset to write entire column every time DB_CheckTableIndex got called.

Statistics

Fixed problems where update was occurring when it should not.

Write

	Fixed condition under which DB_RelatedWriteOptions_pop was enabled.
	Fixed call to abort in "on LinkStructure".
	Added new validation logic for user selected Record ID.
	Made record index checking more stringent in on LinkStructure.
	"resetIndexes" argument to DataOutSetup() because there was a situation where a user wanted to right subset of a column, but block was getting reset to write entire column every time DB_CheckTableIndex got called.

Rate library

Convey Flow

	Bug fix: double entry for Speed_prm and Delay_prm, fixed with only one entry.
	To avoid infinite loop, srLastTime_Calculation is now updated earlier in the function.
	The accumulation animation is now correctly updated in the case of alternate view.
	Corrected bug that would occur when the change indicator limits absolute/percentage and reverse.
	The constraining Ouput/Input rates are now correctly expressed in block time units rather than flow time units.

Interchange

	Fixed error that would occur when item get in and the Value to trigger the release of an item is checked.
	Calculation of intermediate contents of a tank does not influence the update of an amount of product in GA (precision issue).

Tank

	Update the amount of product in GA only if necessary.
	Calculation of intermediate contents of a tank does not influence the update of an amount of product in GA (precision issue).

Plotter library

Bar and Gantt Charts

Removed on PasteBlock as this is no longer necessart since it is now done automatically.

Animation 2D - 3D library

Proof Animate Item

Removed references to ShowConLabel. This could cause an error message when a view other than default was used.

From 7.0.4 to 7.0.5
Released March 23, 2009

Functions & Message Handlers in 7.0.5

New functions in 7.0.5
	GetMouseXActiveWindow	Returns the mouse X position in pixels relative to the active window; for example, a hierarchical submodel window. Use the GetBlock-TypePosition() function to get the coordinates of a block in that window. Can be used in the on blockClick message handler.
	GetMouseYActiveWindow	Returns the mouse Y position in pixels relative to the active window; for example, a hierarchical submodel window. Use the GetBlock- TypePosition() function to get the coordinates of a block in that window. Can be used in the on blockClick message handler.

New message handlers in 7.0.5
	HBLOCKSAVETOLIBRARY	Sent to all enclosed blocks when the H-block structure is saved to a library.

ExtendSim Program

General application changes

	Fixed issue where sometimes a datatable in a dialog box in the structure window could incorrectly think that it had a data link.
	Send the Dialog Item message to a disabled dialog item that has been disabled through code, not through the structure, when it is clicked on. This is a reversion to a previous behavior that was changed for consistency, but affected some users negatively.
	FindBlock and FindNextBlock functionality sped up for large models.
	An unnecessary error message about being unable to load the SDILoader.dll has been bypassed.
	Height and width of plotter is preserved better now when the plotter size is manipulated.
	Printing problem associated with the model name on the footer of the printed document corrected.
	Calling ClearBlock during the connectionBreak message handler should no longer cause a crash.
	Quitting the ExtendSim application by clicking on the red x (Windows) could cause some quitting operations, like ApplicationExitRoutines, to execute twice.
	Animation should work much better on scaled models.
	ListSearch was not working correctly when searching for string values.
	The Clone tool should now work correctly on a second monitor.

DB Add-In

Implemented capability to enable use across Windows and Mac platforms.

	Create user-defined Split function for cross-platform compatibility
	Create user-defined Replace function for cross-platform compatibility
	Replace the use of the file system object with standard I/O functions for cross-platform compatibility

Added check for valid tab index during import.

ExtendSim Dates

	Date/Time calculations improved in some round off cases.
	Improved floating window behavior of Calendar window.
	StartDate and EndDate in the simulation setup dialog update live, when the European data option is selected, or unselected.

Linking

	Dynamic Links from hierarchical blocks built in older versions of Extend could become corrupted when the hBlocks were brought into ExtendSim.
	DILinkInfo function now takes a which value of 11 to return the setting of the flag that determines if the link gets messages during the initialization phase of the simulation.

Model

	Block select rectangle was too large in some cases, making it difficult to select other items on model.
	Some library menu items in large libraries were not always enabled.
	Fixed block substitution where it keeps asking for the same block.

OLE / COM

	Embedded dialog items retain aspect information correctly. (Fixes the Gantt chart and bar chart blocks.)
	Corrections to SafeArray poking and requesting functionality.

ExtendSim Database

	Fixed specific case where a random cell in a database table linked to a datatable was changing when it was not accessed by block code.
	Fixed specific case where clones were not updated when a linked random database cell was updated.
	DBTableImportData() was incorrectly removing relations for that table.
	Fixed Export and Import of selected tables so that relations are preserved if both linked tables are selected.
	Fixed importing of databases so child field values are always preserved, even if parent is a non-unique real number.
	Renaming a table now always revises the lists of tables fields in other tables.
	Table sorting now correctly deals with blank child values.
	Table sorting now maintains previously sorted field record order.
	Fixed database table viewer redrawing problems from deleted fields.
	DBDatabaseOpenViewer() now always open in Viewer mode rather than Structure mode.
	Fixed crash when displaying imported empirical table with no entered data.
	Fixed incorrect drawing of plots when empirical data was changed in random distribution dialog.
	Fixed crash when calling DBTableDelete() while database viewer was displaying table being deleted.
	BTableCopy() was returning incorrect index.
	Prevented an infinite loop when reading a random cell while getting a DATACHANGED message.
	Now updates DB tabs after importing a database.
	Now prevents duplicated field names.
	Fixed SDI database importing so it uses table index 1.
	Make model dirty when choosing different database component from linking dialog.

Item library

Activity

	Fixed problem with the "NB" connector not updating at the right times.
	In PE_PreemptItem, added code to account for the event that a down item is getting preempted.
	Added additional rescheduling to try to pull in an item if an item arrives. This improved the robustness of items moving through the model.
	Fixed clearing statistics for utilization.

Batch

	Fixed problem with query message. If an item was removed from completed items list, the query message was returning a 0.
	Removed erroneous assignment of FirstAttributeIndex that was causing the incorrect assignment of the batched attribute values.
	Added additional condition to prevent demand connector from creating batch if there are no items in the block.
	Fixed problem where more items were pulled in than the batch size if the demand connector was used.
	Fixed array exceeded dimensional bounds problem when animation was turned on and off before the model was run.
	Fixed problem with preserving existing values of non-attributes, e.g., _Animation, _Priority, in batchAttribute_table, when attributes get deleted from a model.
	Force the disposing of dynamic arrays at the end of each simulation run on ENDSIM.
	Added the db address attrib option to MatchingAttribute_pop.

Catch Item

	On TabSwitch message handler, look for the list of Throw blocks only if the simulation is not running.
	Trim the name of the Group if there is an illegal character.

Convey Item

	Fixed shifts.
	Fixed problem where Conveyor could fail to pull in a new item if capacity of Conveyor is 1 and the Conveyor becomes blocked.
	Fixed problem with time units.
	Fixed problem with a time tie when an item gets pulled out of the Conveyor at exactly the same time that it arrives at the end.

Cost by Item

Big architectural change: receive item, update output value cons, then send TAKEN, then SendMsgToInputs()

Create Item

	Changed the way column headings were being set in prg_dtbl to make the number of columns scale better.
	Added more logic to find first item creation event when startTime is much greater than last row on item creation schedule.

Equation(I)

	Added calls to iVarsIn_ConnectorsSetup() and oVarsOut_ConnectorsSetup() to on IconViewChange.
	Big architectural change: receive item, update output value cons, then send TAKEN, then SendMsgToInputs().

Executive

	For the Rate library calculation, adjust the precision only if necessary when a constraint is added for a distributional mode. Also update the new bounds after an intermediate calculation.
	For the Rate flow unit declaration. When a Flow unit is declared using the Executive block, this unit has to be added in the GA in order to be accessible in the rest of the model.
	For the Rate library calculation, adjust the precision only if necessary when a constraint is added for a distributional mode. Also update the new bounds after an intermediate calculation.
	Change in the setting of the call to lpsolve dll, the calculation should be faster because lpsolve does not generate reports on the console anymore.

Get

Big architectural change: receive item, update output value cons, then send TAKEN, then SendMsgToInputs().

History

Added Attrib_OnContinueSim() to ensure the block has the correct GA index for the attrib GA's.

Information

	Average cycle time and average time between were not being reported properly on the connector tool tips.
	Changed the reset connector to send a clear statistics message to this block.
	Updated reset connector to use connector labels instead of animation to display "r" for reset input connector.
	Added new countTotal variable so that other statistics that use the count in their calculation are correct if count is reset.

Queue

	Fixed problem where costing is reset if queue is waiting for a resource and costing is not calculated.
	Fixed problem where items were not correctly removed from resource pool queues if more than 1 different resource pool was required and the item quantity is > 1.
	Fixed problem where resource pool quantities from attributes were not always working correctly.
	Removed calculation of minimum delay from block positions. It only worked when the 3D window was open.
	Added support for wait connector for reneged items.
	For query msgs on itemOut in Resource Pool Queue behavior, don't send msg to Resource Pool unless items are waiting in the queue.
	For query msgs on itemOut in Resource Pool Queue behavior with "Take from ANY resource pool" mode, break the instant ANY requirement is satisfied.

Queue Equation

	Added calls to iVarsIn_ConnectorsSetup() and oVarsOut_ConnectorsSetup() to on IconViewChange.
	Changed how QUERY msgs are handled in "on itemOut".
	In FindNextItem() there was an error in the algorithm if the user has specified more than one rank oVar for tiebreaking.

Queue Matching

	Added call to ConnectorsShow() in 'on IconViewChange'.
	Added code to maintain the results_dtbl link to a db table if that kind of link was made. Also, if linked to db, then update results all the time.
	Added the db address attrib option to MatchingAttribute_pop.

Read(I)

Big architectural change: receive item, update output value cons, then send TAKEN, then SendMsgToInputs()

Resource Pool Resource

	Improved searching for resource pools. It is now faster and only finds the closest pools if there are multiple pools with the same name.
	Added conditional search for closest resource pools.
	Fixed: If Highest ranked item only was selected and queue was empty, an error would result.
	Search for querying queue block's first item in the Resource Pool's items queue in DoCheckQuery.

Select Item Out

	Moved code in Initsim so that throughput would be cleared from the tables at the beginning of every run.
	Added reentrance flag to SelectIn b/. We had a situation where this block was trying to move two items at the same time.
	Added rescheduling and 0 time event for probability and priority. Items could be rejected and then later, on the same step, need to be pulled through.
	Fixed problem where sometimes an item can be pulled into the select block even though an item is currently in the block.
	Fixed problem where priority may be generating error. ConArrayMsgFromCon was called after another message was sent out of the block.

Select Item Out

	Fixed animation of attribute name above icon.
	Added item priority lookup in the SelectByAttribute() proc.
	Attribute table now resizes correctly when it is cloned.
	Enhanced sequential select so that a sequential select can be followed by another select block.

Set

	Added expandRecords_chk.
	Changed DB_GetIndexes() and Attrib_SetValsOnItem() so that a property set in an earlier row can be used in a later row.
	Extended the "if missing" feature to _Item index, _Item quantity, _Item priority, _Batch size.

Shutdown

For competing failures, removed the restriction of having to have > 1 fail streams.

Shift

	Moved updateShift to checkdata so that error checking will have correct shift data.
	Shift table now works correctly when linked to a db table.
	Fixed problem with Shift block getting stuck on start time.

Throw Item

	Modified the script to allow the table of attributes to be linked with a database table. Updatde the block when the linked database table changes size.
	If you click out of the popup menu to select a label, then nothing happens.
	Allow an Attribute table database to be linked to several Throw blocks. In this case the table has to have only two fields.
	Trim the name of the Group if there is illegal character.

Transport

Fixed problem where speed connector did not convert to meters.

Unbatch

	Added automatic mode for setting properties of unbatched items.
	Fixed animaiton problem. Animation picture was sometimes not getting changed.
	Added error message if preserved quantities were used and item had not been batched with preserve uniqueness.

Workstation

	Added setting location to 0 if it is blank.
	Added code to convert negative delay times to 0.

Costing (multiple blocks)

The function used to calculate the queue waiting cost return 0 instead of Blank when waiting cost is not calculated. It is necessary for the workstation because waiting cost and activity cost are summed.

Value library

All Value library blocks

Icon animations of each block when switching views has been updated.

Clear Statistics

Conditionally clearing information blocks now works.

Data Import Export

Added option to choose when the automatic import will occur.

Data Init

Fixed bug in InitializeData().

Data Specs

	Added the "getIndexes" argumemt to BlockRegister() because there were certain situations where registering the structure in CheckData would use wrong indexes if a db import had taken place.
	Added code to account for <i> in GA_SpecsGet

Equation

	Calls were added to iVarsIn_ConnectorsSetup() and oVarsOut_ConnectorsSetup() to on IconViewChange.
	The variable types "DB Read PRI" and "DB Write PRI" have been added back to the popup list in the dialog.

Lookup Table

	Fixed repeating problem when there was no value in the table at the repeat time.
	Fixed problem with Input Table where startTime was != 0.

Math

	Reset position for the animation of a block icon. This fixes a problem where some of the math symbols were not appearing in the correct location.
	Skip BLANK input values for Add, Multiple, and Subtract options when "Ignore BLANKS" checkbox is checked.

Optimizer

	Fixed problem where weighted moving average would calculate incorrectly if the same value came in twice.
	The on ClearStatistics message handler no longer clears for multisim simulations.

Random Number

	Removed error message when probabilities in empirical table are > 1. This table is adjusted so that the probabilities will = 1 in on initsim.
	Shape and scale parameters for Pearson 5 were reversed when importing from Stat::Fit clipboard.
	Lognormal parameters do not need to be adjusted when importing from Stat::Fit.
	Fixed calculation of maximum on beta distribution.

Read

	Changed the field and record selector interface to allow a record to be chosen before a field has been selected.
	Added results_Options_txt and changed the way results_Options_pop is managed.
	Added code in PauseSim and ResumeSimAllBlocks to update dataOut.

Statistics

	Added call to GetStatVersion when looking for blocks in local hierarchy.
	Fixed problems with updating statistics.

Write

	Changed the field and record selector interface to allow a record to be chosen before a field has been selected.
	Added results_Options_txt and changed the way results_Options_pop is managed.
	Removed restrictions on writing data in FinalCalc.
	Added code in PauseSim and ResumeSimAllBlocks to update dataIn.
	When adding input value to destination value, there was a bug if the destination value was a blank.
	Added call to XL_OpenFile(TRUE) in XLMAC_DoIpcConnect.

Rate library

Convey Flow

Fix the calculation of the next time an interval will be reached for a specific case.

Change Units

When a report is written, a local variable is initialized which avoids an error message.

Merge and Diverge

For the Select mode, the value input and the ID are compared using nearly equal function instead of strictly equal comparison.

From 7.0.3 to 7.0.4
Released October 20, 2008

New features in 7.0.4

	Hierarchical blocks	The name of the top level worksheet now appears on the hblock window in angle <> brackets.

	Preferences	Library warnings may be turned off through a Preferences command. (Turns off old version library warnings and legacy library warnings.)

	Demo-Player	The Demo-Player version shows the version number on startup screen.

Functions in 7.0.4

New functions in 7.0.4

E3DLogEvents(long logFlag)

Turns on (or off) the logging of Events in the E3D window. Logging is off by default. If logFlag is true (1), Logging will be turned on. Logging will write messages to the Console.log file in the ExtendSim7 folder when events occur in the E3D window.

MakeArray2(long blockNum, string arrayName, long dim)

Same behavior as the MakeArray function with the exception that it can be called from an outside block and doesn’t have to be called from within the block that contains the array. Note that the ArrayName argument is the name of the array as a string, not the array name itself.

Double GetExtendVersion(long which)

Returns a real number in the format 701.2 where 7 is the major version, 1 is the minor version, and 0 is the middle. The value after the point is 1 for an "a", 2 for a "b", and so on. The final value is always zero for a file read version.

Which:
0 : application version
1 : file version

DynamicDataTable2(long blockNum, String dataTableName, String arrayName)

Same behavior as the DynamicDataTable function with the exception that it can be called from an outside block and doesn’t have to be called from within the block that contains the array. Note that the ArrayName argument is the name of the array as a string, not the array name itself.

DynamicDataTableVariableColumns2 (long blockNum, string dataTableName, string arrayName, long rows, long columns)

Same behavior as the DynamicDataTableVariableColumns function with the exception that it can be called from an outside block and doesn’t have to be called from within the block that contains the array. Note that the ArrayName argument is the name of the array as a string, not the array name itself.

Long ListAddString63s(long blockN, long listIndex, long string63Count)

If you wish your linked list to contain String63s, call this function right after ListCreate. It has the same effect as specifying, for example, n String15s in the ListCreate function. It defines the number of string63s that will be present in each element of the Linked List.

Long ListLocked(long blockN, long listIndex, long locked)

If Locked is true, this function call marks the specified Linked List as locked. If ListDisposeAll is called, that List not be disposed of. If the function ListDispose is called explicitly on this list, it will still be disposed. This function only prevents accidental disposal of the list through the ListDisposeAll call. Returns a zero if the call succeeds. Returns a negative error code value if the function fails.

Long GetDimensionColumnsByName (long blockNum, string arrayName)

Same behavior as the GetDimensionColumns function with the exception that it can be called from an outside block and doesn’t have to be called from within the block that contains the array. Note that the ArrayName argument is the name of the array as a string, not the array name itself. This also means that the function can be called with a string variable as the second argument, and not a hard coded array name.

The following functions are convenience functions intended to be called from Equation blocks. They have the effect of querying a Resource Pool block for the number of available resources or requesting that the Resource Pool block allocate a resource. These functions are implemented through the sending of messages and the use of globals. See the code of the Resource Pool block for more information.

Void ResourcePoolAllocate(long ResourcePoolBlockNum, double NumToAllocate)

Requests the specified Resource Pool block to allocate the specified number of resources.

Double ResourcePoolAvailable(long ResourcePoolBlockNumber)

Queries the specified Resource Pool block for the number of resources that are available.

Functions fixed in 7.0.4

OpenExtendFile

OpenExtendFile could return an error code even if it succeeded.

Weibull and Logarithmic distributions

Weibull and Logarithmic distributions could rarely generate NaNs.

UserPrompt

UserPrompt function could crash if given a string that was too long.

SetRunParameter

SetRunParameter now supports setting the startdate with a value of 10.

UserParameter

UserParameter responds to a press on the Enter key as if the user had clicked on the OK button.

ExtendSim Database

New ExtendSim Database functions:

	String DBToolTipsGet (long databaseIndex, long tableIndex, long fieldIndex)	Returns the current component’s Comments dependent upon indexes which are non-zero.
	DBToolTipsSet (long databaseIndex, long tableIndex, long fieldIndex, Str255 value)	Sets the current component’s Comments dependent upon indexes which are non-zero.

The following functions are designed for convenience of use in equation blocks. They combine the retrieving or setting of a date value with the conversion of the date value into a SimTime (model time units) time value.
	Double DBDataGetDateAsSimTime (long dbIndex, long tableIndex, long fieldIndex, long recordIndex, long timeUnits)	Reads a database cell as a date and converts it to a SimTime value. This allows the user to read a date value directly as a SimTime value, avoiding the conversion process. Uses the 4 database indexes.
	Long DBDataSetDateAsSimTime(long dbIndex, long tableIndex, long fieldIndex, long recordIndex, double simTimeVal, long timeUnits)	Takes a SimTime value, converts it to a date and sets a database cell with that date value. Uses the 4 database indexes.
	Double DBDataGetDateAsSimTimeUsingAddress (double addressValue, long timeUnits)	Reads a database cell as a date and converts it to a SimTime value. This allows the user to read a date value directly as a SimTime value, avoiding the conversion process. Uses a database address instead of the 4 database indexes.
	Long DBDataSetDateAsSimTimeUsingAddress (double addressValue, double simTimeVal, long timeUnits)	Takes a SimTime value, converts it to a date, and sets a DB cell with that date value. Uses a database address instead of the 4 database indexes.

Optimizations in the performance of string fields greatly increase database speed.

Database initialization occurring before PRECHECKDATA no longer sends messages to any blocks, greatly speeding up data initialization.

New records, either inserted or appended, are now initialized with the field initializer if initialization is enabled. If initialization is not enabled, new records are initialized with blanks for real or string and zero for integer fields.

Empirical distributions recalculate their data tables in all cases of importing and when the model is opened.

DB and Table selector components now sort their entries, making it easier to find the desired entry.

Bugs fixed:

	Tables are now being resized correctly when adding fields.
	“List of Tables” fields are now updated correctly when a table name is changed.
	When changing distributions in database cells, random seeds correctly continue the random sequence.
	DB random seeds will now never be the same as model random seeds.
	Right-clicking is now working on Database List window entries.
	Field and rectangular selections in DB Viewer panes with a huge number of records is now working properly and correctly scrolling to area of deletion.
	Setting a new field to RecordID in a table now correctly removes the old RecordID flag.
	Importing a database now correctly closes the file so other operations can be performed on that file.
	DBTableCopy() now deals correctly with relations, if present, and will correctly recreate relations that were present in the “From” database and in the “To” database.

Item library

Activity

	Changed icon animation to show/hide length when animation is turned on and off.
	Tool tips on "SD" connector is now conditional.
	In the case of a time tie, items will try to be moved out before shutting items down.

Catch

	Corrected problem that even if ConnectionType came back true, the Catch block might not have been connected.
	The name of Dialog item in the Throw block has been updated. CatchByNum DI no longer exists

Create

	Time units label has been corrected.
	Condition added: Prg_GetNextTime(). Fixes potential calendar dates rounding error.

Conveyor and Transport blocks

Fixed a problem where the path was not calculated correctly if a sensor connector was used.

Equation(I)

In oVarsOut, the method of getting an equation result for a downstream blocker has been changed.

Executive

	The Executive block now receives a message when the simulation resumes from pause.
	Link to the rate calculation, the test for tank level stability has to be counted twice instead of once.

Exit

Moved block-to-block animation to after the Taken message is sent. This makes the animation appear in the correct order

Gate

Added CONDITIONAL_ROUTE_BLOCKER response in On itemIn for the connector SM_MaxItemsIn.

Queue

	The Average Wait dialog item is now cleared on ClearStatistics.
	Added additional checks for the maximum queue length input connector.
	Fixed animation of a hierarchical block when the item quantity > 1.
	Changed icon animation to show/hide length when animation is turned on and off.
	Fixed problem renege immediate. It was scheduling an event when it wasn't supposed to.
	Added immediate reneging of multiple items. The value of the renege input connector is the number of items to renege.
	Fixed the problem where a resource would not allocate if an item is pulled from the output and the resource rule is any resource.

Queue Equation

	Moved the many places where NextItemLocked was getting set into FindNextItem().
	Added places where NextItemLocked is set to FALSE.
	Altered how the query message is being handled in ItemOut.

Read(I)

Added a call to BlockRegister() in CheckData just as a precautionary measure to ensure the block is properly registered at the beginning of a simulation.

Resource Item

	ToBeDisposed was not being initialized causing an error.
	Added a call to BlockRegister() in CheckData just as a precautionary measure to ensure the block is properly registered at the beginning of a simulation.

Resource Pool

	Fixed the problem with reneging from a Resource Pool Queue when the number of runs was > 1.
	NumResourcesIn connector no longer ignores novalues and nor reports an error for values < 0.

Select Item Out

	Added SendMsg wants to the output when a message comes in through the Select connector. This prevents items from moving through the block if there is no downstream space.
	Fixed a problem where attribute based select was sometimes reporting an incorrect throughput. This necessitated the adding of the Count Invalid dialog item.
	Fixed dynamic priorities.
	Enhanced Select by Priority so that a Priority Select can be followed by another Select block.
	Check for needs in response to sending wants out input connector.
	Fixed a problem that could block items if a query message came in through the output connector and the Select connector was used.

Set

Added a call to BlockRegister() in CheckData just as a precautionary measure to ensure the block is properly registered at the beginning of a simulation.

Shutdown

	Commented out a redundant correction that was accounting for TBF_ENDS_AT_END_OF_REPAIR.
	Updated the value of SD_ValueOut in InitSim so that SD_ValueOut is reporting the correct up value at the start of a simulation.

Throw

	Must declare the connection type to answer the request.
	Type of connection for SysGlobalInt14.

Unbatch

Fixed the problem with indexing in a list of unbatched items.

Workstation

Added CallAnimationArgument to Length(... to fine tune the animation of the block status.

Write(I)

added call to BlockRegister() in CheckData just as a precautionary measure to ensure the block is properly registered at beginning of sim

Value library

Data Import Export

Export does not occur if the simulation is aborted.

Data Specs

Added a call to BlockRegister() in CheckData just as a precautionary measure to ensure the block is properly registered at the beginning of a simulation.

Decision

The "B input con" now shows if "A is not a number" is turned off.

Display Value

Instead of stretching smaller, it restores to default.

Equation

added support for calendar dates

Holding Tank

Holding Tank: Added AnimationStatusChange so that animation will update when it is turned on

Math

Math: And was requiring that all input connectors were == 1 rather than >= 0.5

Optimizer

Mods and added function to ensure a unique variable is used for new clones.

Random Number

	Prevent plotting poly if MaxY is zero (bad data had caused an abort, cancelling HBlock open).
	Instead of adding .00001 inside the log, it now checks to make sure x is not zero.
	Replaced references to dynamic array with data table so that linking with databases will work correctly.

Read

	If a model was built on a PC and then opened on a MAC, one would have needed to transfer the chosen worksheet name.
	Added a call to BlockRegister() in CheckData just as a precautionary measure to ensure the block is properly registered at the beginning of a simulation.
	Changed the way in which current row was being calculated for a local copy when rowIsRunNumber_chk = TRUE.

Simulation Variable

Converted date to simulation time.

Write

	If a model was built on a PC and then opened on a MAC, one would have needed to transfer the chosen worksheet name.
	Added a call to BlockRegister() in CheckData just as a precautionary measure to ensure the block is properly registered at the beginning of a simulation
	Changed the way in which current row was being calculated for a local copy when rowIsRunNumber_chk = TRUE.
	Corrected problem where certain situations caused an error to be flagged for a row index that was too large even though expandDataSourceRows_chk was checked.

Rate library

Convey Flow

	A final portion cannot be detected by a sensor as it is still growing. Before, extra events were being generated.
	The precision issue determining the number of portions that have disappeared has been adjusted.
	In some specific cases, the next event had to be reevaluated more often because there were too many intermediate calculations.
	The accumulating point is now positioned in intervals with nearly equal precision.
	The limit to pass to a higher level has to use nearly precision comparison.
	If an event changes one interval into another, the equality precision must be lowered.
	A portion of a sensor calculation used to finish before scheduled, causing the formation of a new LP. This has now been corrected.
	If a sensor is at position 0 (end of the Convey Flow block), the value which is reported is the one from the entering portion.

Tank / Interchange

	When the content and capacity are empty, the siExtremLevelTank is considered to be empty.
	If TimeNextExtremLevel was too close to CurrentTime (within 15 digits), the TimeNextExtremLevel used to occasionally get stuck at CurrentTime. This problem has been corrected.

General

When a Rate block was enclosed within a hierarchical block, either updating or dragging the hierarchical block in the model could deteriorate the mapping of the Rate blocks. The problem has been fixed.

General library changes

2D-3D Animation Library

3D Scenery: Fixed problem where 3D object was not hiding and showing properly.

Stepped empirical distribution no longer causes an "Array exceeded dimensional bounds" error.

ExtendSim Program

3D Window

	Optimizations allow more objects to be present on the 3D window and smoother animation in general.
	Pausing and resuming a 3D model is greatly improved.
	Aborting the run of a 3D model with the stop button has been corrected.
	Occasionally, the changing of skins could fail if the skins were initially set then later changed. This situation has been corrected
	The .cs extension for cs files in the extensions folder was case sensitive, so lower case files (cs) wouldn’t be loaded, while upper case files (CS) would be. Now, both are loaded
	Logging of 3D events in the Console.log is now optional and is set to off by default. (Part of the 3D optimizations. E3DLogEvents function is used to turn on logging.)

Dialog Items

	Datatable DBField column tag no longer retrieves the wrong information from the database.
Column tag: TAGPOPUPCONDARRAY. See column tag list in the Developers Reference for more information.

ED Date Functions

Internal conversion calculations improved for calendar dates with time units set to months. (Still not a recommended setting.)

Linked Lists

	Linked lists now support String63s as well as other sizes of strings.
	Linked lists can now be ‘locked’ which means that they will not be disposed if ListDisposeAll is called for by a certain block.
	Saving linked lists in a model no longer causes issues.

Linking

	Due to an optimization in the updating of links, models that have linked information should run faster. (For models with few links this will not be significant, but for models with lots of links it should be quite noticeable.)
	The link dialog deals better with deleted databases (empty database slots).

OLE/COM

Embedded objects will remember if they were inserted as icons.

Scripting

	MoveBlock and MoveBlockTo no longer crashes if called from a block within a closed hBlock.
	DIPositionSet working properly.
	Calling ClearBlock in a DeleteBlock message handler no longer prevents the rest of the selected blocks from being deleted. (Calling clearBlock on one of the blocks in the initial selection is still a no-no, however.)

Structure window

	Large numbers of include files now work correctly in the Include popup menu.
	Adding large Icon View names now maintains the menu correctly (limited to 31 characters).

General program changes and additions

	Bad pictures on a worksheet will not crash the application.
	HBlocks now send correct CONNECTIONMAKE and CONNECTIONBREAK messages when changed or added to the model.
	Added HBLOCKFROMLIBRARY message. The message is sent to the HBlock when placing an HBlock from a library onto the model.
	Fixed some multiple monitor issues including dialog boxes that would open on the wrong screen and a plotter opening to the wrong size when opened on a different monitor.

From 7.0.2 to 7.0.3
Released July 1, 2008

ExtendSim Database

For developers, there is a new worksheet (ES7 DB to Industry DB) listing all of the ExtendSim database functions. Worksheet is in an Excel spreadsheet located at ExtendSim7/Documentation/v6 to v7 equivalents.xls.

Functions - DBRecordFindMultipleFields() and DBRecordFindMultipleFieldsArray(). Used to find records that have multiple search criteria. Both partial and exact match are allowed.

For developers who previously programmed using the Industry database API, there is a new worksheet (Industry DB to ES7 DB) listing all the Industry database functions and the equivalent ExtendSim database functions. Worksheet is in an Excel spreadsheet located at ExtendSim7/Documentation/v6 to v7 equivalents.xls.

Bugs fixed:

	Finding records functions: partial match fixed.
	DBDataGetParent() and DBDataGetParentUsingAddress() were returning -1 error even if all indexes were correct.
	The DBFieldSetProperties() function now correctly changes the RecordID status.
	PutDataAsParentIndex() now allows a zero parentIndex to set child to <no value yet>.
	Empiric distribution plotting problems have been fixed
	Some extra refreshes and drawing artifacts have been fixed.
	Sorting table artifacts and crashes have been fixed.

Item library

Item handling blocks

Added continueSimGetArrays() and Attrib_OnContinueSim()to make the ContinueSim message handler consistent. These ensure that the array information is updated when a model is continued after being saved during the simulation run.

Batch

Fixed calculation of max min and sum attributes for matched batches.

Convey Item

Fixed messaging problem. Rejects response was not getting returned in some cases.

Equation(I)

	In Eq_OnInitSim, added updating of oVarsOut.
	Moved downstream blocker checking to PostInitSim.

Executive

Added PassArray for ItemArrayA to support legacy models GA's.

Gate

Big architectural change: receive item, update output value connectors, then send TAKEN, then SendMsgToInputs().

Read(I)

Moved downstream blocker checking to PostInitSim.

Resource Item

Added condition in 'on numResourcesIn' to filter out msgs that might arrive during PostInitSim.

Resource Pool

Change connector now sends the correct message.

Select Item In

Added conditional linking to SetupProbTable().

Select Item Out

Conditionally dispose of Probability_nda SetupProbTable().

Set

SetupTable() now properly updates the value column.

Shift

Repeat time units now use correct time units.

Throw

Initializing the number of Catch blocks corrected.

Unbatch

Items are now restored from preserve uniqueness in the same order that they went in.

Workstation

	Added LinkStructure message handler.
	Initialized the variable "delay_DistribMaxRows" in InitSim.

Value library

Data Import Export

Added detailed display of data source and destination names on its icon.
	Fixed problem where import in connector was only importing from Excel.

Equation

Removed disabling of respondToLinkAlerts_chk on the Options tab.

Holding Tank

Fixed 'Do not reset' option.

Lookup Table

Fixed problem with time units and interpolated values.

Math

Fixed issue where the second connector was not used for some functions where it was optional.

Read

Changed the way index health is checked in CheckData.

Write

Changed the way index health is checked in CheckData.

Rate library

Convey Flow

Updates when Starving or Blocking limitation has to be propagated.

Executive (LP calculation)

	The propagation logic has been rewritten for (FlowBlockReceive6) to correct the 0ption “Valve animates and reports blocking and starving information”.
	Uses a Nearly equal comparison instead of a Strictly comparison to detect limiting blocks.

Interchange

When the effective rate is nearly equal to 0, the checking of the comparison between inflow and outflow is more robust.

Merge and Diverge

Correction of a bug in ClearStatistics message handler relating to a loop updating results.

Sensor

The units now update correctly in this block.

Tank

When the effective rate is nearly equal to 0, the checking of the comparison between inflow and outflow is more robust.

Valve

Stat information updated even if there is no change in the effective rate after the block initiates a new LP calculation.

General

	For added security, the variable SysFlowGlobalInt9 is initialized before the determination of the LP area.
	Renamed constant ccVARIABLE_E with ccSECTION_E. The name Variable is reserved for decision variable in the LP.
	Renamed constant cFROM_INPUT with cFROM_UPSTREAM and cFROM_OUTPUT with cFROM_DOWNSTREAM.
	The Attrib_OnContinueSim() message handler has been updated in all the Rate library blocks.

ExtendSim Program

2D Animation

Speed of models run with 2D animation has been increased.

3D Window

The multiple mountpoint behavior of the Shelf object is now available to custom object builders.

Dialog Items

Datatable cells return the index value when linked to a database child field.

Functions

MoveBlock and MoveBlockTo work corectly when the model is scaled.

OLE/COM

Poking a string to a single database cell now works correctly.

General program changes and additions

	European format checkbox in the command Simulation Setup > Setup tab takes effect immediately. It no longer requires the closing and reopening of the dialog.
	Cursor keys work better for moving drawing objects when scaled.
	The PostInitSim message was being sent to blocks for continueSim instead of InitSim.

From 7.0.1 to 7.0.2
Released May 12, 2008

ExtendSim Database

	Percent format displays correctly in datatables.
	Importing databases gave spurious error messages for correct data due to incorrect parsing of carriage returns. This has now been corrected.
	Preserved SDI Database dataOptional flags between importing and exporting databases.
	Fixed DBRandomDistributionSet() and DBRandomDistributionGet() functions and rewrote documentation for these functions.
	Fixed database structure window in viewer mode so it would display selected table correctly.
	Fixed database viewer so it would maintain record number column.
	Long strings (greater than 127 characters) now stored correctly.
	Imported databases with child fields from non-unique parent values now relink correctly.
	List of Tables selector has been labeled correctly as a Parent selector.
	DB InverseWeibull distribution now contains Beta parameter.
	DB Logistic and LogLogistic distributions set to correct distributions.
	Some DB notification messages were not being sent when DB data or structure was changed.
	Copying and pasting tables with child fields no longer cause a crash.
Function - DBDataGetAsStringParentAltField() – See Developer Reference
Function - DBDataGetAsNumberParentAltField() – See Developer Reference
Function - DBDatabaseCloseViewer() – See Developer Reference

Item library

Activity

	Added clearing of additional output statistics.
	Added ListDisposeAll to endsim. If the simulation were terminated without completing, linked lists could be left behind, increasing model size.
	Fixed a bug with the “Delay from lookup table” option. Certain distributions were not getting the correct parameter values.
	If capacity was set to infinite and if controlled by a shift, when go from off shift to on shift, the capacity was not getting reset to infinite.

Batch

	Revised calculating batch size so that query message is not needed. This speeds model execution.
	Added additional rescheduling of items in response to a wants message if delay kitting is selected. Fixes problems where items were not always pulled through the Batch block.
	Added calculating batch sizes when demand connector receives a true. If Allow Zero Batch Size is not selected, and one of the inputs is zero, the batch will not be created.
	Allow Zero Batch Size is TRUE, novalues (blanks) are treated as 0's.
	Fixed problem where 3D objects were not being duplicated for item representing batch when preserve uniqueness was selected.
	Removed CurrentSim == 0 because some of the initialization needs to be done for every run.
	Added B3DCopyObjects to create 3D objects.
	Fixed problem where batch would only allow items in if demand connector is true even if batch had already started.

Catch Item

Revised searching for throw blocks to speed up initialization.

Convey Item

	Fixed problem where attribute popup was hidden behind length parameter.
	FindAvailableAnimation is no longer called when animation is not on. Speeds up model execution.
	Revised calculations of event times when conveyor speed changes.

Create

Changed help for beta distribution. Maximum is location plus max parameter.

Executive

Revised searching for throw blocks to speed up initialization.

Gate

In PassItem() if in Demand Values Mode, changed when accumDemand_prm is updated by posting a current event.

History

	Fixed problem where the table did not update correctly if show string attributes was toggled
Added automatic attributes if the last block created was a History block and attributes (properties) had been selected for that block.

Queue

	Added error check for duplicate resource pools.
	Departures dialog item is now cleared in on ClearStatistics.
	Added PutSorted in On QueueFunction so that items would be inserted according to the sorting rule if QueueFunction is called from another block.
	Added Allocation of Resource Index Array.
	If reneging or 3D is turned on, items are now expanded to their quantity as they enter the queue.

Queue Equation

Fixed a bug with the results being placed on the output value connectors.

Resource Pool

	Revised calculation of changing number of available resources. This was not working properly if the change was greater than the number of resources available.
	Added call to Util to calculate utilization when the shift schedule changed.
	Updated ValueOut whenever queueLength_prm changed.

Select Item In

	Added condition to not recalculate animation if animation is not on.
	Fixed problem with Equation (I) and Get blocks controlling SelectItem In block.

Select Item Out

	Fixed problem if number of outputs different from table size.
	Fixed problem where animation of output connector would not display properly

Shutdown

	If Sched connector connected, results tab was not working. [ Shutdown - [ Shutdown -
For competing failures, added option to have a “Down Value” field so different fail streams can have different associated down values.
For competing failures, added new output value connecter to broadcast the current fail stream.

Throw Item

	Added check to make sure that building the list of catch blocks is only done once at the start of the simulation.
	Revised searching for throw blocks to speed up initialization.
	Revised UseBlockNum searching for Catch blocks.

Transport

Fixed problem where delay was not using time conversion ratio for different time units.

Unbatch

	Removed sendmsg(needs, output). This is incorrect in response to a wants message from an output connector.
	Initialized AnimationTemp and PriorityTemp. Animation and Priority properties were showing up as uninitialized characters in the Properties tab.
	Fixed uninitialized variable in senditems.

Workstation

Fixed 3D animation problem if Workstation was used with resources

	Fixed a bug with the “Delay from lookup table” option. Certain distributions were not getting the correct parameter values.
	Fixed problem where blocked workstation would not unblock. See the commented out code in the block.
	Added clearing of additional output statistics.
	Moved B3DActivityStackItem to before where item is inserted into list.
	Added support for item quantities greater than 1.
	Fixed Problem when calculating queue wait times.

“Record ID Tracking“ implemented in these blocks:

Read, Write, Read(I), Write(I), Set, Resource Item, Data Specs.

Value library

Data Import Export

	Added condition so that imports and exports would not always occur.
	Fixed problem with exporting from global array to database.
	Fixed problem where clicking on scroll bar for ODBC import table caused an out of range error.
	Fixed problem where exporting to existing table did not work.
	Fixed database export to text file.
	Added option to append or overwrite ODBC database table.

Random Number

	Changed help for beta distribution. Maximum is location plus max param.
Added DisplaySim function to display the total probabilities of the empirical table if they do not sum to 1.
Added paste distribution from Stat::Fit.

Statistics

Changed block name column to resource pool name for resource pool blocks. The block name will always be the same and this is a convenient place to record the resource pool name.

Removed restriction on 65536 rows for exporting to Excel.

Queue Tools

	Removed unnecessary line of code that was causing an out of range error.
	Added PutSorted in On QueueFunction so that items would be inserted according to the sorting rule.

Rate library

Convey Flow

	Fixed problem when the time unit of the block is different than the general time unit of the model, the outflow rate wasn't calculated right.
	Correction in the posting of events to reach the next event.
	Accumulation variable static variable now updates more often.

Valve

	Quantities are now updated as soon as a goal has been interrupted.
Added animation of the rate value within an Hblock.

Interchange

	Changed the moment the content of the block is calculated when an item circles in a loop.
	Block status updates more often.
	Fixed problem where uninitialized value returned an error when an item was blocked.
	Constants PUSH and PULL are now used when sending an item.
	Changed event sequence to update the Value out connectors, then send the item.
	In PostInitsim, if connected, a message asking for the capacity of the Tank/Interchange is sent for the first calculation.

Merge and Diverge

	Parameter connectors now for Throw/Catch connections as well as flow connections.
	In mixed Flow and Throw Flow connections, the local variable has been changed to liLinkTypeTC from liLinkTypeConnTC.
	The constraint for distributional mode calculation has been changed as it had created some infeasible solutions in the LP (precision issue).

Executive (LP calculation)

	If Optimize a Bias and Merge/Diverge all have 0 effective rates, the introduction of a new constraint is skipped.
	An objective function is no longer required by the Bias block (only one branch open example).
	Added a condition to delete an SD problem only if it exists.
	Post constraints introduced in relation to the change made with the distributional mode set of constraints.
	The tolerance of the LP has been lowered to avoid infeasible solutions. If it is feasible: a precision level of 12 is too high, the precision of the effective rate is now 10 digits.

Tank

In PostInitsim, if connected, a message asking for the capacity of the Tank/Interchange is sent for the first calculation.

General

It is now possible to have a parameter linked to a database and connected with a connector. Only the link to the database is used as a result.
An animated blue cross is displayed on the icon when the shift is off in the Valve, Tank, and Interchange blocks.
	Corrected Lower and Strictly Lower in the popup menus of Rate blocks.
	ConArrayGetNumCons gives an error message when the connector doesn't exist. Use ifDef in place of this function.

Blocks with Shift capabilities

Check performed during Initsim to see if the shift starts onshift or offshift.

Blocks with Throw Catch capabilities

Corrected error in the sequence of actions to update the connections.

Animation 2D - 3D library

Animate 3D

Rotation is now in degrees.

Animate Value

Added font size dialog to control font size of animation text.

ExtendSim Program

2D Animation

Colored borders around worksheet text boxes and AnimationBorder now supported.

3D Windows

	3D Window now starts processing events just before the simulation start, instead of before initialization. This prevents a delay at the beginning of the simulation.
	3D Window ends processing events after finalCalc, instead of before.
	The pausing of 3D models greatly improved.
	Custom E3D Objects should no longer cause a crash (this was a rare occurrence).

Dialog Items

	Button column tag works for string datatables.
	Appending labels to popup menus and datatable labels when appending empty strings or appending to an empty string greatly improved.
	SLPopup column tag supports linking to database tables that have child fields.

Functions

	ListSetSort correctly sorts the contents of a list.
	MailSlotClose is updated to return a zero for success, as the manual describes.
GetConnectedTextBlock() now returns the connector text block inside a hierarchical block if the block argument is negative.

Linking

Copying for paste links from datatables fixed.

OLE/COM

Supports safearrays for both poke and request in the OLE object model.

Supports poking and requesting directly to a Database table or a Global Array.

Printing

Text documents will open faster in the case of a slow printer driver.

Queue Tools

	Removed unnecessary line of code that was causing an out of range error.
	Added PutSorted in On QueueFunction so that items would be inserted according to the sorting rule.

General program changes and additions

	Links added to the Help menu.
	Clone tool access in a locked model is no longer available through the right mouse button.
	Links from Extend 6 models are now marked as non-registering links. This helps prevent them from behaving more slowly then they did in the Extend 6 models.
	GA initialization was being done twice, once before initsim and once between initsim and postInitsim. This is now being done only once before initsim.
	Pasting icons into Powerpoint now preserves transparency.
	Connection make, break, and click messages now being sent into and out of hierarchical blocks correctly.
System Message - RESUMESIMALLBLOCKS Msg – Sent to all blocks when the model resumes execution after a pause.

From 7.0.0 to 7.0.1
Released January 23, 2008

Fixes at the program level in 7.0.1

3D Window

	Visual flicker when the camera faced due south is fixed.
	All items now update when shadow preferences changes, not just some.
	Improved loading and windowing in the 3D window behavior.

2D Animation

	Moved animation speed delay to the beginning of the next step resulting in increased speed for 2D animation.
	Added ModL functions AnimationGetSpeed(), AnimationSetSpeed(), and AnimationSetDelayMode() to allow more control with concurrent 2D animation.
	2D animation objects now create bitmaps, speeding up 2D animation movement functions.
	Animation has been sped up to speeds comparable with Extend 6.
	Corrected flickering of animation objects in motion.

Dialog Items

	The editing of percent parameter dialog items and percent datatables cells is now more consistent with the database.
	Enabled the disabling of linking of parameter dialog items. (See DILinkingDisabled function.)
	GetDialogItemLabel function improved when working with clones of specified dialog items.

Hierarchy

	Creating HBlocks via model selection no longer sends unneeded block deletion and connection messages.
	HBlocks in libraries some times had issues with finding the libraries for blocks included in the HBlock. This issue has now been corrected.
	Incorrect block messages that were being sent during the making of an HBlock have been eliminated.
	Eliminated tedious block library linking for v6 HBlocks from libraries.
	In some rare cases, block several levels deep in hierarchy were not getting simulate messages. This issue has now been corrected.

Database

	Fixed inconsistency that would occur when editing percent format in linked datatables.
	When setting child field values, the database would incorrectly match the parent record if one existed. This issue has now been corrected.
	Fixed the sorting of tables with child fields and parent fields. Child tables will now be relinked correctly.
	Database component selectors now have information to help in selection.
	Random cells now correctly generate new random members every time they are accessed instead of keeping older generated values if accessed in the same block at the same step.
	Database can now import a hybrid file of ExtendSim and SDI Database tokens for generating Extend v6 and ExtendSim 7 compatible database files.
	Improved the selection of child values when clicking on the database child cell.
	DBDataGetAsString() now correctly returns the percent format as a decimal number (e.g. 50% returns 0.5).

Linking

Data source links have been eliminated from read-only parameters when they are copied and pasted.

General Changes to the Application

	Application stability has been improved. (Rare crashes associated with the closing and opening windows has been eliminated.)
	"View connection lines using defaults" was not working correctly. This has been corrected.

Block level changes in 7.0.1

Value library

	Constant block	Fixed problem in Constant block where output could appear to not be connected if constant value is set to 0 in CheckData.
	Data Import Export block	Data Import Export block now correctly imports to a database at the beginning of a simulation.
	Mean & Variance block	Added additional calls to calculate statistics in the Mean & Variance block so calculations would always be up-to-date.
	Statistics block	Fixed the problem where time was showing up in the wrong column for the Tank mode of the Statistics block.
	General changes to the Value library	Value output connectors have been fixed so they always report the correct value.

Item library

Batch-type blocks

	Fixed a problem in the Batch block where preserving items can be inefficient.
	Fixed the problem where blocking would prevent the Batch block from accepting new items when unblocked.
	In the Batch block, if average is selected and more than two items are batched together, attributes now work correctly.
	Batches of size 1 now work properly.
	In Unbatch block, item is now properly deleted from preserved item linked list in pullItem.
	In the Unbatch block, we added additional calls to BTB_sendItem to convert an item to a new picture.

Convey Item block

	Added connection line icon view to the Convey Item Block.
	Revised the condition for calculating item position in Convey Item Block.

Database blocks

	Added input variable DB Read Index.
	The equation output variable named DB Write is now called DB Write Value.
	Added output variable DB Write Index.

Equation-type blocks

	The names of some of the input and output variables have been changed for equation-type blocks (Equation, Equation(I), and Queue Equation).
	In addition, new input and output variables were added to those blocks. See pages 602 and 603 of the electronic version of the User Guide for a complete list of variables for the equation-type blocks. The electronic User Guide is located at \ExtendSim\Documentation\User Guide.pdf.
	In certain circumstances, the query operation was not getting passed through the DE Equation block. Now it is.
	The Queue Equation block now properly deals with the entering of items having Item Quantities of > 1.
	The equation input variable named DB Read has been changed to DB Read Value.
	Changes were made to the block Help in Equation based blocks: Shift, Cost by Item, and Create.

Queue blocks

	If the Queue is pushing an item out, items are no longer not allowed to enter Queue.
	Maximum length input connector now works properly in Queue.
	Added additional call to CalcAveLength in Queue. Calculation of average length when using resource pools was sometimes wrong.
	Fixed problem when items of quantity 0 enters a Queue. The wrong item will no loner be disposed.

Read block

Fixed problem in the Read(I) block where connector labels were refreshing even if they were not shown and the animation was off.

Resource Pool

Added additional error checking if Resource Pool is missing.

Select Item Out block

	Added animation of item blocked in Select Item Out block
	Fixed problem in Select Item Out block where items were not always being pulled through when they should be.

Shift block

	If the block is set to complete the item before shutting down, you may now save the shutdown duration.
	If the block is off shift, items are now rejected properly.

General changes to the Item library

Revised autoconnecting blocks in the Item library. Source code is now in its own include file.

Rate library

Convey Flow block

The first time effective rates are calculated now propagates correctly.

Interchange block

	Corrected item animation on the icon.
	The indicator value output connector will consistently be updated during initsim and a message will be sent during postinitsim.
	The first time effective rates are calculated now propagates correctly.
	To check posted times when a new indicator or level empty or full is reached, instead of using the >= function, use the NearlyGreaterThan function.

Merge and Diverge block

The distributional mode implementation in the Merge and Diverge block has been changed so it will no longer cause a model to stop and deliver an error message.

Tank block

	Corrected item animation on the icon.
	The indicator value output connector will consistently be updated during initsim and a message will be sent during postinitsim.
	The first time effective rates are calculated now propagates correctly.
	To check posted times when a new indicator or level empty or full is reached, instead of using the >= function, use the NearlyGreaterThan function.

Valve block

	For setting a Goal, a popup menu has been added to the Flow Control tab. This allows you to choose whether to start the simulation run with the goal off, the goal on, or with the goal defined by the value at the G connector rather than the dialog value. (A new goal can no longer be triggered by changing the value of the parameter via linking message or typing a new number in the dialog parameter.)
	For Goal quantity and duration, if the option “Start new goal when previous goal finishes" is selected, the Goal would automatically start “on” and never turn “off”. This has been corrected.
	For setting Hysteresis, a popup menu has been added to the Flow Control tab. This allows you to start the simulation run with hysteresis ignored, observed, or defined by the value at the Start connector rather than the dialog value.
	If the Start connector and the G connector were connected and a message gets sent to the Start connector, the block will now correctly send a message to the G connector before reading the value at the G connector.

Miscellaneous

Turned off animation in 3D Quickview if no 3D object is associated with the item.

Event handling

	If the end of the simulation is not timed, beforeEvent if has been added to the Event output connector.
	Adjusted searching for future events so that a round-off error would not be a factor.
	Resets the number of current events to 0 after the first set of current events processes.

Proof Animation

	Proof bug fixed.
	Initialized Proof variables every run.