History of label 3 changes

In crates/oh/src/main.rs, lines 1616–1647 on 73c01b3448ee739021595599fee16f03f873a1ba6a415681d042b7b237569810. Every change that wrote or deleted one of these lines, or deleted a line from between them. Exact, because each line keeps its identity across edits; edits elsewhere in the file are not here. Also: oxy log -L 1616,1647:crates/oh/src/main.rs.