| Formula | Description |
|---|
| $tu(rnd, 1, 10, 20)$ | Return a random number between 10 and 20 every minute |
| $tu(seq, 1/4, 1, 100)$ | Goes from 1 to 100 (included) changing every 15 seconds |
| $tu(rndimg, 15, "/sdcard/pictures")$ | Pick a random image file from directory every 15 minutes |
| $tu(rndimg, 5, "/sdcard/pictures", "txt")$ | Pick a random image file matching pattern every 5 minutes |
| $tu(rndfile, 15, "/sdcard/foo")$ | Pick a random file from directory every 15 minutes |
| $tu(rndfile, 5, "/sdcard/foo", "txt")$ | Pick a random file matching pattern every 5 minutes |