Chunk code in common script code???

I want to ask if anybody here knows what's the purpose of the chunk tests before the canvas is loaded on the screen. It is found in the common scripts of base torque. I actually have made a script code that doesn't involve common folder before and haven't used these chunk tests, but I weary if I'll be missing out something if I bypass it (coz it's damn too slow on start up).

Any wisdom on this greatly appreciated.