User's Guide
The Attribute page of the Public Interface Editor, shown below,
is used to specify the attributes (or data) of your reusable part. You
can think of an attribute as a variable that contains information associated
with a part.

The name of each attribute for the part is displayed in the Attribute
name list box. Using the push buttons at the bottom of the page,
you can add, update, or delete attributes of a part.
To add an attribute to the part, you need to specify the following:
- Attribute name
- The name of the attribute. This name is displayed in the list of
attributes when making connections to the part.
- Get selector
- The script called to answer, or get, the value of the attribute.
- Set selector
- The script called to set the value of the attribute. Typically,
this script also signals an event indicating that the attribute value has
changed. If you want the attribute to be read-only, leave this field
blank.
- Change event symbol
- The symbol used to signal the event that the attribute value has
changed.
- Attribute data type
- The class name that the attribute is an instance of.
- Attribute contents data type
- The class name of the objects when Attribute data type is a
collection.
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