In compound objects, a button is a part which calls a script when it is pushed. A button is created with the command PAT: BUTT.
"Button" is also an agent genus in C3/DS. This genus is used primarily for lift call buttons.
In C1, a button is a genus that refers to the red lift call button alone, which has been called "red", "call", or "button" by various noun-teaching computer objects.