creo4 config.pro option documentation for: VRML_EXPLODE_LINES 
vrml_explode_lines
yes
*
, no
Exports a model to the VRML format with or without the explode lines.
yes
- Exports a model to VRML with explode lines with assembly or assembly process data.
no
- Does not export a model to VRML with explode lines with assembly or assembly process data.