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Chapter 11

Shows you how to use item attributes and the attribute tables that display them.

Overview

Attribute Contents

Distinguishing System- and User-Defined Attributes

Using Attribute Tables

Updating Attribute Tables Automatically

Attribute Table Display Precision

Positioning an Attribute Table

Using Attribute Table Menus

Transferring an Attribute Table

Displaying the Subtable for an Attribute that Contains an Object

Creating a Subtable for an Attribute

Adding Attribute Displays

Adding Attribute Displays to Class Definitions

Manipulating an Attribute Display From its Menu

Adding or Removing Attribute Displays Programmatically

Example: Adding Attribute Displays to New Objects

Loading Attribute Values From an Attribute File

Using the Authors Attribute

Using Indexed Attributes

Performance Considerations

Expressions for Indexed Attributes

Universal Unique Identifiers

UUID Components

UUID Storage

Adding UUIDs to Subclasses

Accessing UUIDs

Avoiding Duplicate UUIDs

Interaction of G2 UUIDs with GFR

Conclusion

Using Other Special-Purpose Attributes

Formatting Attributes

Evaluation Attributes

Actions That Affect Attributes

Changing An Item Name

Concluding Attribute Values

Expressions That Refer to Attributes

Referring To Attributes By Name

Referring to Attributes Through a Symbolic Expression

Iterating Over User-Defined Attributes

Referring To the Text Attribute of an Item

Referring To an Attribute that is an Instance of an Object

Referring To an Attribute Given By a Variable or Parameter

Referring To an Untyped Attribute That Contains an Object

Referring Indirectly Using a Symbol

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