TIMER = msec
Resets the timer to a number of milliseconds. Normally this is just used to reset the timer to zero but you can set it to any positive integer.
TIMER returns the elapsed time in milliseconds (eg, 1/1000 of a second) since reset. If not specifically reset this count will wrap around to zero after 49 days.
The timer is reset to zero on power up and you can also reset it by using TIMER as a command.