- rename OS_PATH_SEPARATOR -> PS and use in all needed places - change function name from `open_file` to `launch_default_app` - move `mkdir`, `rm` and `launch_default_app` helper functions to libs - add executable_path_widget to export module if needed, not to the preferences - add show_status - remove support_format - change function name `format` to `format_string`, add comments - replace apostrophes by quote marks