IGES Levels
If there are curves in the IGES file or if there are different levels
(or layers) in the IGES file, the IGES-In
Surfaces, Curves, and Levels dialog box appears. Levels are sometimes
used by other systems to separate assembly components or to separate IGES
entity types.
To select the desired entities and levels:
Select Include
surfaces to import any surfaces in the file, if applicable.
Select Include
curves to import any curves in the file, if applicable.
Select the levels to include:
Click OK
to exit the IGES-In Surfaces, Curves,
and Levels dialog box or click Cancel
to abort the import process.