Specifies the header size in width
x height, in current file units. Sizes can be edited by
selecting Edit List (see
Custom Frame Element Sizes).
Set top of Headers to
Top of Roof object/component
Matches the tops of the headers to
the top of the roof object, or to the top of the component
selected in Use Roof Components
Bottom of Roof object/component
Treats the roof object as a roof
deck and matches the tops of the headers to the bottom
of the roof, or to the bottom of the component selected
in Use Roof Components
Class
To control appearance and visibility,
select a class from the list of classes present in the
drawing or create a new class (see Creating Classes)