Access Cards can up the gameplay of your level by making the player solve a
particular problem before continuing to the next area of play.

To make an access card

1)place a sprite # 130 on a wall.

2)Choose the palette. Alt-P in 3-D mode.  0 for blue. 21 for red. 22 for
  yellow.

3)Put an access card sprite # 60 the SAME palette as the Card Slot.
  Now give the Card Slot an original lotag.  And give an activator a lotag
  equal to the card slot's hitag.  put the activator in something to activate
  like a door.

Done!

