History of EmuControl::screenshot_ppm 1 change

In client/emu_control.py, lines 221–224 on 1b40a077e41ff99aea0d342250dd4b6891315a4150ffcda2edfa7538c4f64e48. 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 221,224:client/emu_control.py.