The user can modify the elevation of an existing building level element, from the Building Levels window, select Modify > Elevation the Elevation window is displayed.

Modify the elevation as required then click OK to save the change or click Cancel to discard any inputs and close the Elevation window.

The user can also set/unset the purpose attribute of the STRU element, when set the STRU element will assigned with a purpose attribute and displayed in the Building Levels window.