Constant CONTINUATION_PREFIX 

pub const CONTINUATION_PREFIX: &'static str;

Prefix of a change message that continues its writer’s open gesture (the next keystroke of a word): tilo.cont/1 <gesture> <path> <payload>. It is the gesture’s first entry again but for the action’s payload, so it carries only the gesture (simple hex), the edit’s path (body, rows/r1/title; - for none) and the action’s JSON payload, whose type is the first entry’s. Readers fold it into that entry (ActionContext::continued).