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