Collect this frame's Ctrl+letter presses as control-character bytes (`0x01`-`0x1A`). Used by the framebuffer view to forward Ctrl-C to the UART (where the shell's wait poll sees it) without dumping ordinary keystrokes there -- those go to the keyboard device for the running program to read.
(ui: &egui::Ui)
source not stored for this graph (policy: none)
no test coverage detected