Variables are declared in the top/right area of the Workbench Studio main window.

The variable editor is a grid tool that enables you to declare all variables of the application.

Variables in the editor are sorted by groups:

• Global variables.
• "Retain" non volatile global variables.
• I/O variables (each I/O device is a group).
• variables local to a program (including in and out parameters in case of a UDFB).

Please refer to the description of variables in the language reference for a more detailed overview.

Each group is marked with a gray header in the variable list. The "-" or "+" icon on the left of the group header can be used to expand or collapse the group:

Double-click the header line enables you to sort, show or hide columns, and to apply a filter for each column. Filter is described as a text string that may contain '?' and '*' wildchars.

Using the Grid

Refer to the following topics for further information:

• creating new variables
• using the editing grid
• sorting variables of a group
• defining I/O devices
• editing as text
• bookmarks

Each variable is described with:

• a name
• a data type and a dimension
• an attribute
• an initial value
• a tag and a description text
• OEM defined properties

• a user group
  The user group enables logical sorting of variables in the grid.

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