Landmarks define the areas in which the Quarry, Filler and Template Drawing Table operate in. Depending on the shape required, more than one may be necessary (such as a three-dimensional shape for the builder). Landmarks can be placed on glass blocks.
Powering a landmark with redstone will cause it to project blue beams of light along each axis for 64 blocks. The beams are not stopped by terrain, and can be used as a guide to placing your next landmark.
A powered landmark.
A landmark laser passing through terrain.
When you have placed 2 or more landmarks, right click on one. They will then be "connected" by red beams of light. The beams of light mark the lines that will be used by the machine that is attached. Terrain will not stop the red beams, but they are not infinite. Landmarks can be a maximum of 64 blocks apart.
Connected landmarks.
Connected landmarks in a 3D area. Notice how the top landmarks are straight horizontal.
Placing a machine next to an activated landmark will cause all connected landmarks to pop off the ground. Be sure to pick them up again.
