Creates a custom property to be associated with the current sheet set or with each sheet.
SHEETSET (Command) Find:

Custom properties can be used to store information such as a contract number, the name of the designer, and the release date.
List of Options
The following options are displayed.
- Name
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Specifies the name of a new custom property.
- Default Value
-
Specifies a value for the custom property.
- Owner
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Specifies whether the custom property belongs to the sheet set or to a sheet.