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.
When using
Process Road Design or RoadNet, the existing ground Profile can be
generated
automatically as part of the process, simply by specifying the Surface
to use,
and so is not a separate prerequisite.
The Proposed Finish Grade Profile can then be added in the
editor, and
the Roadway processed, all without ever drawing anything in the drawing
itself.
The more traditional LDT approach of
generating an existing ground Profile in the drawing and then adding a
proposed
finish grade Profile by drawing on it in the drawing is also an option.