Add set of segments

lowercase 'a' when the timer is stopped

Edit set of segments

lowercase 'e' when the timer is stopped; you are currently only allowed to change segment names

Quick-load segments

numbers 1-9 when the timer is stopped

Load next set of segments

lowercase 'n' when the timer is stopped

Load previous set of segments

lowercase 'p' when the timer is stopped

Start timer

spacebar when the timer is stopped

Stop timer

spacebar on the final segment or otherwise uppercase 'R' when the timer is running

Reset timer

uppercase 'R' when the timer is stopped

Split segment

spacebar when the timer is running; this also stops the timer if used on the final segment

Unsplit segment

backspace when the timer is running

Skip segment

lowercase 's' when the timer is running

Save splits

uppercase 'S' when the timer is stopped