- Orbit Reader 20 User Guide v2.9 (DOC) – Manual in Doc Format (Released on 28-Aug-2020)
- Orbit Reader 20 User Guide v2.9 (PDF) – Manual in PDF Format (Released on 28-Aug-2020)
- Orbit Reader 20 User Guide v2.9 (HTML) – Manual in HTML Format (Released on 28-Aug-2020)
- Orbit Reader 20 User Guide v2.9 (Grade 1) – Manual in BRF Grade 1 Format (Released on 28-Aug-2020)
- Orbit Reader 20 User-Guide v2.9 (Grade 2) – Manual in BRF Grade 2 Format (Released on 28-Aug-2020)