- Orbit Reader 20 Plus User Guide v1.4 (DOC) – Manual in Doc Format
- Orbit Reader 20 Plus User Guide v1.4 (PDF) – Manual in PDF Format
- Orbit Reader 20 Plus User Guide v1.4 (HTML) – Manual in HTML Format
- Orbit Reader 20 Plus User Guide v1.4 (BRF- Grade 1) – Manual in BRF ENG Grade 1 Format
- Orbit Reader 20 Plus User Guide v1.4 (BRF- Grade 2) – Manual in BRF ENG Grade 2 Format