History of Mark::label 1 change

In crates/backdrop/src/mark.rs, lines 114–116 on 04f9c984439e1a49dbbbb32a47ebf0fab4279fe7a4cc03f2a798f5e620725c58. 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 114,116:crates/backdrop/src/mark.rs.