& btpayload_ref()
 
  Syntax: btpayload_ref(<UnitRef>)
 
  This function displays a string detailing the weapons and ammunition 
  payload of a reference unit, ie the default templated unit.
 
  The string is formatted <itemname>:<quantity>|
 
	Note: This function does not display melee weapons.
 
  Error Messages:
 
  * If <UnitRef> is not a valid unit the function returns #-1 NO SUCH 
    MECH
  * If the function fails for any other reason the function returns 
    #-1 
 
  Example:
  Given that EXT-4D is valid mech reference
 
  > think btpayload_ref(ext-4d)
  IS.MediumLaser:4|IS.LRM-10:1|IS.Anti-MissileSystem:1 
  |IS.SmallLaser:1|Ammo_IS.Anti-MissileSystem:1|Ammo_IS.LRM-10:1
