| Hint facility - A helpful clue to the correct answer |
| Cheat - Allows user to see all the answers during the learning phase |
| ? - Reveals the answer to the current example |
| Fog Signal - Text description of the fog signal appropriate to the current set |
| Movement - The configuration of lights moves in the approximate direction |
| Light Information - Describes lights shown on a buoy at night |
| Light Mode - Switches to alternative light configuration for current buoy |
| Play - Repeats the current sound signal |
| Timer - Aid to flashing light identification |