Pre Autonomous Task

Hey There! I am trying to figure out what is the pre autonomous task used for, and does it have something to do with jumper clips? Can I keep this task empty? How can I do it? I am not using an LCD screen nor sensors, just jumper clips to switch between autonomous codes. And is it necessary to keep the duration code line before the pre autonomous task? (#pragma autonomousDuration(20) #pragma userControlDuration(120))? Thanks

You can leave it empty. And you can delete those pragma statements.
Pre auton is code that you want to run before the robot is enabled.

Code like this

Also code like an lcd selector. Anything that runs before the robot starts user control or starts autonomous.