touch r Apply renice to a process. Prompt for PID and renice value. Suppressed in secure mode. s Change delay between refreshes. Prompt for new delay time, which should be in seconds. Suppressed in secure mode. t Toggle display of processes and CPU states information. A Sort by age, with newest first. ^L Redraw screen. M Sort tasks by resident memory usage. N Sort numerically by process ID. P Sort tasks by CPU usage (default). S Toggle cumulative mode. (See the -S option.)