*SORRY FOR THE NON TECHNICAL TERMS BELOW*

Hey..i was looking through some "fixed gear" threads, and i noticed a lot of Road Bikes which have been converted..but where the gear levers should be (on the frame) there was nothing..it was just a smooth piece of Frame. The same thing where there should have been holes for the brakes.

Is there a way to do this, or am i just completely tripping out?
Because obviously track bikes don't have gears...so yeah


Thanks to anyone who actually understood what i wrote