Release 10.1A: OpenEdge Development:
AppBuilder

> ## Context IDs

> AppBuilder’s API allows `XFTR` event handlers to gather information about all of the widgets, procedure files, SmartObject instances, and user-editable code sections in AppBuilder. Each of these different objects is stored in a separate record in AppBuilder’s internal temporary tables. The context ID provides a unique reference for each type of object.

> Although AppBuilder’s API allows you to reference some objects by name or by handle, you should use the context ID to reference objects. Context IDs have the following advantages:

> - They are guaranteed to be unique for each AppBuilder session.

> - They generally provide faster access to the available objects.

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