Count things down with this neat little timer.
Default controls:
Press z to start/pause the timer
Press a to show/hide instructions
Press x to reset the timer (when paused or timer is at zero)
Press s to toggle fast adding/subtracting (when paused)
Hold up to add minutes (when paused)
Hold down to subtract minutes (when paused)
Hold right to add seconds (when paused)
Hold left to subtract seconds (when paused)
The variables at the top of the script can be initialized to different values for convenience without breaking the script.