The Tree mode Properties editor lists all of the attributes defined for the particular instance of the selected element, with their values.

To define a new attribute for the selected instance of the element, just select it from the drop-down list on the tool-bar at the top of the editor: it will be added to the Attributes panel.

Tip:  IDF supports dozens of attributes; rather than showing All items in the tool-bar's list, you may choose to show a reduced list of the most Common items or just a list of the Defined items instead.

This is an example of the Properties editor for a PAGE element:

Type
Attributes
Values
When you have finished setting up the properties of the particular element, click the OK button on the toolbar. Any alterations which you have made in the Properties editor will be coded into IDF automatically. Or
Click Cancel to ignore the alterations to that element and close the Properties editor.

Links

Tree mode wizard

IDF elements

IDF attributes