ended ▁at ▁its ▁second ▁session ▁in ▁ 1 9 7 8 . ▁ ▁History ▁ ▁The ▁first ▁text ▁of ▁the ▁Oper ational ▁Gu idel ines ▁was ▁titled ▁Oper ational ▁Gu idel ines ▁for ▁the ▁World ▁Heritage ▁Committee . ▁It ▁dates ▁back ▁to ▁ 1 9 7 7 ▁at ▁the ▁First ▁Session ▁of ▁the ▁World ▁Heritage ▁Committee ▁( 2 7 ▁June ▁- ▁ 1 ▁July ) ▁in ▁Paris . ▁The ▁D raft ing ▁Committee ▁and ▁the ▁World ▁Heritage ▁Committee ▁prepared ▁the ▁text . ▁It ▁contained ▁four ▁chap ters ▁and ▁twenty - e ight ▁paragraph s . ▁In ▁October ▁same ▁year , ▁the ▁Oper ational ▁Gu idel ines ▁for ▁the ▁Im plementation ▁of ▁the ▁World ▁Heritage ▁with ▁ 2 7 ▁paragraph s ▁followed . ▁A ▁year ▁later , ▁at ▁the ▁Second ▁Session ▁of ▁the ▁Inter g overn ment al ▁Committee ▁for ▁the ▁Prote ction ▁of ▁the ▁World ▁Cultural ▁and ▁Natural ▁Heritage , ▁the ▁Oper ational ▁Gu idel ines ▁was ▁adopted ▁with ▁ 3 0 ▁paragraph s . ▁ ▁The ▁World ▁Heritage ▁Committee , ▁the ▁main ▁body ▁responsible ▁for ▁the ▁Im plementation ▁of ▁the ▁World ▁Heritage ▁Convention , ▁has ▁re vised ▁its ▁text ▁ever ▁since ▁adding ▁paragraph s ▁updating ▁it ▁with ▁new ▁concepts , ▁knowledge ▁or ▁experiences . ▁▁ ▁The ▁ 2 0 1 1 ▁Oper ational ▁Gu idel ines ▁is ▁the ▁latest ▁version ▁d ating ▁from ▁November ▁ 2 0 1 1 ▁ ▁and ▁available ▁in ▁English , ▁French , ▁Portuguese ▁and ▁Spanish . ▁A ▁re vised ▁D raft ▁d ating ▁from ▁February ▁ 2