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Property Sets and Property Data
A property set is an object created from a property set definition. It contains
a user-definable group of related object properties. When you attach a property
set to an object or a style, the property set becomes the container for the
property data associated with the object.
Creating Property Set Definitions for Objects or Styles
When you create a property set definition, you specify whether the property
set can be attached to objects or to styles, depending on which of the following
kinds of properties you want to track:
■ Automatic properties generally belong in style-based definitions. Automatic
properties, even when attached to a style, can vary for each instance of
the object. It is more efficient to include automatic properties in a
style-based definition because the properties are immediately associated
with any object that uses the style.
■ Manual properties can belong to either style-based or object-based
definitions. The value of a manual property associated with a style is the
same for every object. For example, a Manufacturer property will probably
be the same for every instance of a particular door style, so it should be in
a style-based property. However, a Door Number property is different for
each instance of a door, so it should be in an object-based property.
■ Fields enhance the documentation capabilities within a drawing file. A
field is updatable text that is set up to display data that may change during
the life cycle of the drawing. When the field is updated, the latest value
of the field is displayed. You can insert fields in a manual property in the
property set definition or in a property attached to an object or style.
NOTE Fields can be associated with hyperlinks. For example, if you insert a
field pointing to a drawing in a manual property, and create a schedule table
that contains that property, you can jump from the table cell with the field
property in it to the drawing it is linked to. For detailed information about
fields, see “Use Fields in Text” in AutoCAD Help.
TIP The quickest way to locate and view an AutoCAD topic referenced in
AutoCAD Architecture 2011 Help is to click the Search tab in the Help window,
select the Search titles only option, and then copy and paste or type in the
AutoCAD topic name, and click List Topics.
3786 | Chapter 49 Schedules and Display Themes
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