filltraffic
===========
Set traffic designations using flood-fill starting at the cursor.
See also `alltraffic`, `restrictice`, and `restrictliquids`.  Options:

:H:     High Traffic
:N:     Normal Traffic
:L:     Low Traffic
:R:     Restricted Traffic
:X:     Fill across z-levels.
:B:     Include buildings and stockpiles.
:P:     Include empty space.

Example:

``filltraffic H``
  When used in a room with doors, it will set traffic to HIGH in just that room.
