Open C API interface to Rapid prototyping and GenConnect.

The standard functions provide routines exporting industry standard files. The
functions in this file enable you to:
. Create a VRML output file from geometry definitions in the part.
. Export geometry to an ICAD transfer file.

The Computer Graphics Metafile (CGM) routines enable you to:
. Export a CGM from a drawing or layout
. Import a CGM to one or more drawings.
. Import an ICAD transfer file.
. Import a VRML file.
. Close an STL file.
. Open an STL (Stereo Lithography) file for text output
. Open an STL file for binary output and return its handle.
. Put a facetized solid in an STL file.
. Put a facetized set of sheets in an STL file.
. Initialize the params data structure with the default VRML import
parameter values.

The following CGM functions will be removed in NX5.

. uc6410 (replaced by UF_CGM_export_cgm)
. uc6411 (replaced by UF_CGM_import_cgm)
. UF_STD_set_cgm_size_mode (replaced by UF_CGM_set_session_export_options)