.. dfhack-tool::
    :summary: Highlights reachable tiles.
    :tags: fort inspection map

This tool highlights each visible map tile to indicate whether it is possible to path to that tile from the tile at the cursor. You can move the cursor around and the highlight will change dynamically. The highlight is green if pathing is possible and red if not, similar to the highlight DF uses to indicate which tiles can reach the trade depot.

While the UI is active, you can use the following hotkeys to change the behavior:

• l: Lock cursor: when enabled, the movement keys move the map instead of

  moving the cursor. This is useful to check whether parts of the map far away from the cursor can be pathed to from the cursor.

• d: Draw: allows temporarily disabling the highlighting entirely. This

  allows you to see the map in its regular shading, if desired.

• u: Skip unrevealed: when enabled, unrevealed tiles will not be

  highlighed at all. (These would otherwise be highlighted in red.)

gui/pathable