unit nearTargets distance

Returns the list of targets within the given distance or range.
Targets may not be restricted to only enemy units.
For each target detected an array is created as a sub-array within the returned Array.
Each sub-array entry will consist of:

* Position - A perceived quantity which will include judgement and memory errors.
* Type - A perceived quantity giving only what was recognised.
* Side - Perceived side.
* Subjective Cost - Positive value for enemies, greater value for important or more dangerous enemies.
* Object - Object type, can be used to get more information if needed.

For each target