• Excel DMI Connection process: A Database DMI with an Excel Dataset is now able to read or write directly to the Excel file without opening the Excel application in the background. This improves performance and allows the DMIs to work when Excel is not installed, such as when running in the cloud. In RiverWare 7.5, the new connection process is the default. In most cases, this is the preferred process, but if you rely on Excel to open the workbook and evaluate formulas, you should select the Open Excel in the background option.

• RoundToFactor RPL Predefined function: A new RoundToFactor RPL Predefined function was created. If you have a user-defined function also named RoundToFactor, you will need to change the name or delete the user-defined function.

• Modifications to Passthrough Account Solution: Within water accounting, the approach to solve a chain of passthrough accounts and supplies was modified to allow more passthrough accounts in the chain. This change affects all passthrough accounts, but no numerical or behavioral differences are expected. We strongly recommend that you test your accounting models with the 7.4.3 patch or 7.5 before using it in production.

• Object Redispatching: In rare circumstances, object redispatching did not work correctly in Rulebased Simulation when there were Input flags (I or Z) on the governing slots. Now the algorithm to determine the method to redispatch always chooses the previous method if no other method can be found, guaranteeing that the object will redispatch a method. This change could cause some objects to redispatch when previously they did not, leading to different behavior.

• TableLookup RPL Predefined function: The function TableLookup now has an additional argument specifying a numeric tolerance. A version with the old behavior has also been added, TableLookupDefaultTol. When RiverWare reads RPL expressions involving calls to the old TableLookup function, they will be automatically replaced with calls to TableLookupDefaultTol, which retains the old behavior (that is, uses a tolerance of 10-6 in standard units). This means behavior will not change, but you will now see TableLookupDefaultTol in your RPL sets where you used to see TableLookup. We recommend that you update your RPL expressions to use TableLookup and specify the tolerance to use. See “Modified RPL Predefined Function—TableLookup and TableLookupDefaultTol” for more information.

• Links: A new property, Linked Slots, represents each slot to which the selected slot is linked.

• DMI configurations: The DMI configurations are now compared. Each comparable item can have properties and child items. For example, the database DMI item has properties and child dataset items, and the dataset items have properties and child slot selection items. When two items are compared, their properties are compared, then their child items are compared.

• List Rules in Order of Execution: A new setting, “List Rules in Order of Execution”, was added to the RPL Set and RPL Group items. If set to “Yes”, when the output includes rules that execute, they are listed in order of execution (agenda order), instead of first to last. This setting is useful for Rulebased Simulation and Initialization Rules Sets, which can be executed in “...3,2,1” order.

• Show Execution Properties: A new setting, “Show Execution Properties”, was added to the RPL Set, RPL Group, and RPL Rule/Goal items. If set to “Yes”, the output will include additional information related to execution, as appropriate. Specifically, this setting controls whether the following properties are shown: Index, Flag, Priority, and On (Yes/No). These properties correspond to columns of the RPL set editor, as applicable to the type of set.

• Open File: A new script action, “Open File”, was added to the list of available script actions. The Open File action includes a setting that opens a file selection dialog to locate and specify the file to open during script execution using the configured Microsoft Windows desktop application file association for the file extension. For example, a file with a .xlsx extension would be opened with Microsoft Excel. Files having no extension or an unrecognized extension will launch the Microsoft “Open With...” program selector during script execution. See “Open File” in Automation Tools for more information.

• Divider: A new script action, “Divider”, was added to the list of available script actions. Although it is in the action list, a divider does not contain or execute any operations during script execution. The sole purpose of the divider is to provide a visual script section header with configurable text and color on the script dashboard. See “Divider” in Automation Tools for more information.

• Select Windows, then Toggle Workspace Display Mode.

• Enter the keyboard shortcut: Ctrl-T

• Select Windows, then Send Workspace to Back.

• Enter the keyboard shortcut: Ctrl+B

• Select Windows, then Window Icon.

• Select the new RiverWare logo menu button in the Workspace toolbar, as shown in Figure 1.4. This change also decreases the height of the toolbar, showing a more compact view.