▁not ▁least ▁as ▁a ▁sub - set ▁of ▁the ▁published ▁h Calendar ▁and ▁h Card ▁micro format ▁specific ations , ▁neither ▁of ▁which ▁is ▁still ▁a ▁draft . ▁ ▁Use ▁of ▁Ge o ▁allows ▁parsing ▁tools ▁( for ▁example ▁other ▁websites , ▁or ▁Firefox ' s ▁Oper ator ▁extension ) ▁to ▁extract ▁the ▁locations , ▁and ▁display ▁them ▁using ▁some ▁other ▁website ▁or ▁mapping ▁tool , ▁or ▁to ▁load ▁them ▁into ▁a ▁G PS ▁device , ▁index ▁or ▁aggregate ▁them , ▁or ▁convert ▁them ▁into ▁an ▁alternative ▁format . ▁ ▁Us age ▁If ▁latitude ▁is ▁present , ▁so ▁must ▁be ▁longitude , ▁and ▁vice ▁vers a . ▁The ▁same ▁number ▁of ▁decimal ▁places ▁should ▁be ▁used ▁in ▁each ▁value , ▁including ▁trailing ▁zero es . ▁ ▁The ▁Ge o ▁micro format ▁is ▁applied ▁using ▁three ▁HTML ▁classes . ▁For ▁example , ▁the ▁marked - up ▁text : ▁ ▁< div > Bel v ide : ▁ 5 2 . 6 8 6 ; ▁- 2 . 1 9 3 </ div > ▁ ▁becomes : ▁ ▁< div ▁class =" geo "> Bel v ide : ▁< span ▁class =" lat itude "> 5 2 . 6 8 6 </ span >; ▁< span ▁class =" long itude "> - 2 . 1 9 3 </ span ></ div > ▁ ▁by ▁adding ▁the ▁class - attribute ▁values ▁" geo ", ▁" lat itude " ▁and ▁" long itude ". ▁ ▁This ▁will ▁display ▁▁ ▁Bel v ide : ▁ 5 2 .