40d:Lever

A lever is a device that can be linked to other devices to control them. A lever is pulled through its q menu with aP. A nearby dwarf will then pull it. Pressure plates are like levers, but are activated automatically by creatures stepping on it.

Objects that can be controlled by levers include:

• Bridge – Turns the bridge into either a raised drawbridge, or a retracted bridge, depending on which option was chosen when the the bridge was constructed. The lever will raise/lower/retract/extend the bridge.

• Door – Opens/closes the door. Note that once you connect a door, it is either completely open, or locked. There is no "closed, but can be opened by a dwarf" state anymore.

• Floodgate – Opens/closes the floodgate. After the lever is installed, it works exactly like a door.

• Cage/Restraint – Opens the cage/chain/rope and releases whatever it held. This is permanent and you will have to reinstall and relink the cages/restraints after one use. You recover the mechanism used in the cage/restraint.

• Hatch – Opens/closes the hatch. When open it just disappears and allows water through. Note it is suspected that like doors - once you connect a hatch, it is either completely open, or locked. There is no "closed, but can be opened by a dwarf" state anymore.

• Grate – Opens/closes the grate. When it it open, it just disappears. Water goes through it just the same, but it cannot be walked on anymore. Anybody on it will probably fall through (more testing needed).

• Support – Deconstructs the support, except without a dwarf next to it. Most commonly used to effect caveins.

• Upright Spear/Spikes – Retracts spears/spikes.

• Gear assembly – Engages/disengages the gear assembly. When it is disengaged, no power goes through it and anything on top of it falls down