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Properties of the Variable 
In the Properties of the Variable dialog box, you can make a range of settings.
The Properties of the Variable dialog box is divided into tab pages, each covering different settings.
The settings are context sensitive for the respective variable type and have the same settings that are provided for defining the variables with the variables editor. For more information, see Defining Variables.
Select the
variable. In the Properties screen area, the properties dialog for the
variable appears. You can use
Display/Change to set whether the
properties of the variable can or cannot be changed. You can save your
settings with
Save.