README says what the module adds to Ground Control's library and what it works around, and how to use it. JSPR.md is the protocol as the library speaks it, from its source, with its surprises. CLOUDLOOP.md is account to first message, from WII6's IRIDIUM.md. TESTING.md is the levels, the rig, and what has passed: Python, native_sim, an ESP32-S3 and an STM32U5 against the fake, and free checks against a real 9704.