Initial version, it supports:
- STEP directories containing STX files
- STEP.DAT files containing STX files, packed with RESPACK without encryption
- STEP.DAT files containing STX files, packed with RESPAC2 without encryption
The following are NOT supported:
- STEP directories containing SEE files
- STEP.DAT files containing SEE files, packed with RESPACK without encryption
- STEP.DAT files containing SEE files, packed with RESPAC2 without encryption
- STEP.DAT files containing STX files, packed with RESPACK with encryption
- STEP.DAT files containing STX files, packed with RESPAC2 with encryption
- STEP.DAT files containing SEE files, packed with RESPACK with encryption
- STEP.DAT files containing SEE files, packed with RESPAC2 with encryption