Preview of the proposed up-rust native-frame-model branch (up-rust b6b99c6d, up-spec f0e9b17) — not released documentation. branch · write-up
up_rust::wire

Constant LOCAL_EXPERIMENTAL_COMPACT_ID_START

Source 
pub const LOCAL_EXPERIMENTAL_COMPACT_ID_START: u16 = 0x8000;
Expand description

First compact ID reserved for local or experimental future tools.