The lookout command allows units to report sightings
of other units, planes, and land sectors.
Note that non-spy units require military on-board in order to be able
to see anything.
The various ranges over which lookout is effective
break down into two groups:
UNIT to UNIT
This range is dependent on both the visibility of the unit
being observed and the visual range of the observing unit.
(see info Unit-types)
UNIT to PLANE
Planes are treated as if they had a visibility of 10.
For example:
[##:##] lookout 24
