In addition to logging notes, you can use these commands to do a few other things.

/t {Task Name}
Log the beginning of a new task.
/e {Error Description}
Log an 'error' committed by the participant.
/a {Assistance Description}
Log assistance required of the facilitator by the participant.
/q {Quote Description}
Log a quote from the participant.
Remove the last log entry. Be warned, though: you erase it, it's gone, and there isn't any confirmation.
Erase all entries and reset the timer.
Blow away all localStorage data. This is useful for returning to a complete state. If you do this, you will lose ALL sessions you've logged, and you won't be able to recover them.