Warp doors are the tiles that are solid or fly-through based on doormode. (Base 3 doors) How is asking what the most vital part of the module is off topic?
let me rephrase, ASSS can draw bricks wherever it wants in relation to something else. (such as the moving bricks on EB, brick timer was 1, every second it would draw a brick in front of a ship, thus looking like it follows the ship)