The /apps/metacity/global_keybindings/run_command_window_screenshot key defines a keybinding which causes the command specified by this setting to be invoked.
/apps/metacity/global_keybindings/run_command_window_screenshot Kii na-akọwa kiibaịndịn nke n'ebute ntiiwu ezipụtara site na nhazi à á ga-atụtegharị.