Vertical and Horizontal Range of the Interior Elevation

The default choice is Limited. In this case, the IE view will extend horizontally until the Room Boundary line.
An Infinite Horizontal Range means that the Interior Elevation viewpoint will extend horizontally to include all visible parts of the model.
An IE viewpoint’s vertical range is set manually by the user in the General Panel of Interior Elevation Settings, or the Info Box.
If you want the Interior Elevation geometry to correspond to a zone, choose the Detect and Fit to Zones Vertical Range option from the General Panel of Interior Elevation Settings.
Zones edited by Solid Element Operations are also calculated accurately, provided that you also check the Consider Solid Operations box. For example, a single zone trimmed to a slanted roof will have several different zone heights. These are accurately reflected in each viewpoint of the Interior Elevation group.