Standard Button and Door Combination - by Mark "DR_Destructor" Rohrer

The QuakeLab - http://www.in2nett.com/stevefu/QuakeLab

        TEXTURES:

        Any texture, your choice. Button-like textures are obviously
        the best choice. 

        ENTITIES:

        func_button, func_door

        WHAT TO DO:

        First, make 3 brushes, 2 for each part of the door, and one for the
        button that will activate the 2 parts of the door.  

        Assign each of the brushes the desired textures (+1button and
        door03_2 were used in the example).  After that, assign the
        func_button entity to the button brush, and func_door to each part
        of the door (the other 2 brushes.)

        Now, make up a common 'targetname' for each of the door brushes,
        and 'target' the button to this name.  Set the 'speed' and 'angle'
        on them so that the doors retract in the intended direction, and the
        button moves back in the desired direction. Assign the button and
        doors 'sounds', and you're done. 

        OPTIONS/COMMENTS:

        Buttons can also be set into the floor, the ceiling, and even at
        odd angles in sloped walls.