Profiles are stored within .pro files, with user-defined names. Existing Ground/Surface Profiles and Proposed Finished Grade/Design Profiles both use this filetype. Multiple .pro files can be drawn on the same Profile Grid.
There are several different routines for creating profiles including Profiles From Triangulation Files, Profile From Surface Entities and Profile From Points On Centerline. Before using these profile creation routines, the horizontal alignment needs to be created as a centerline file or polyline. The Quick Profile routine can be used to create profiles in one step.