▁from ▁the ▁symbol ' s ▁centre ▁except ▁in ▁the ▁ground ▁domain , ▁where ▁it ▁is ▁hook ed ▁to ▁a ▁short ▁offset , ▁straight ▁down ▁from ▁the ▁symbol ' s ▁base ▁centre ▁( see ▁diagram ). ▁M ob ility ▁indicator ▁( field ▁R ) ▁Dep ict s ▁the ▁mob ility ▁of ▁an ▁object ▁( see ▁M ob ility , ▁below ). ▁It ▁is ▁used ▁only ▁with ▁equipment . ▁Head quarters ▁staff ▁or ▁offset ▁location ▁( field ▁S ) ▁Ident ifies ▁a ▁unit ▁as ▁a ▁headquarters , ▁or ▁indicates ▁the ▁object ' s ▁actual ▁location ▁on ▁the ▁map ▁when ▁it ▁has ▁been ▁shift ed ▁away ▁in ▁order ▁to ▁decl utter ▁the ▁display . ▁It ▁goes ▁straight ▁down ▁from ▁the ▁symbol ' s ▁centre ▁left , ▁then ▁angles ▁towards ▁the ▁actual ▁location ▁( see ▁diagram ). ▁Fe int / d ummy ▁( field ▁AB ) ▁Ident ifies ▁a ▁unit ▁intended ▁to ▁draw ▁the ▁enemy ' s ▁attention ▁away ▁from ▁the ▁area ▁of ▁the ▁main ▁attack , ▁or ▁a ▁de co y ▁designed ▁to ▁fool ▁enemy ▁intelligence . ▁It ▁consists ▁of ▁a ▁dashed ▁che v ron , ▁placed ▁above ▁the ▁frame , ▁like ▁the ▁e ch el on ▁graph ic ▁mod ifier ▁( the ▁standard ▁is ▁unclear ▁as ▁to ▁how ▁the ▁two ▁combine ▁graph ically ). ▁See ▁Fe ints / D umm ies , ▁below . ▁Install ation ▁( field ▁AC ) ▁Ident ifies ▁a ▁particular ▁symbol ▁as ▁an ▁installation . ▁It ▁s its ▁at op ▁the ▁frame . ▁See ▁Install ations , ▁below . ▁A ux