A property alteration definition: a collection of property, hatch, and text alterations.

Contained by a query.

Created automatically by the project.

Used with a range table that modifies objects in different ways based on where they fall in a range of values. You can modify 14 properties, including text and hatch patterns, of queried objects using this collection. You add property, hatch, or text alterations to the collection using the Add, AddHatchDef, or AddTextDef methods. Therefore, to get an item from this collection, declare the return value as Variant. Source drawings are unaffected by property alterations unless you save them back.

To alter properties, you define a query, set the Query.AlterTag property to True, create a property alteration using Query.AlterProp, and execute the query in Draw mode. You cannot use property alteration in other modes.

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