When Show Advanced Tools is selected in the Advanced preferences pane, you can use several advanced commands to speed up the recording process:
When Show Advanced Tools is selected in the Advanced preferences pane, you can use several advanced commands to speed up the recording process:
Record/Record Toggle: Use to stop recording but to continue playback. Use it again to resume recording from the playhead position.
Record/Record Repeat: Use to delete the recording, move the playhead back to the recording start position, and start recording again.
Discard Recording and Return to Last Play Position: Use to delete the recording and move the playhead back to the last play position. Unlike Record/Record Repeat, you will need to manually begin a new recording, using any Record command.
Do any of the following:
To use Record/Record Toggle:
Choose Record > Record Button Options > Record/Record Toggle.
Control-click the Record button 
in the control bar, then choose Record/Record Toggle from the shortcut menu.
To use Record/Record Repeat:
Choose Record > Record Button Options > Record/Record Repeat.
Control-click the Record button in the control bar, then choose Record/Record Repeat from the shortcut menu.
To use Discard Recording and Return to Last Play Position: Press Command-Period (.).