Shortcut Key Function for recording options in Quick Test Professional :

Record - F3 - Starts recording mode.
Run - F5 -Runs the test from the beginning or from the line at which the test was paused.
Stop - F4 - Stops test recording or the test run.
Analog Recording - CTRL + SHIFT + F4 -Starts/ends analog recording mode.
Low Level Recording - CTRL + SHIFT + F3 Starts/ends low level recording mode.