▁is ▁common ▁on ▁pay ▁television ▁services , ▁as ▁they ▁are ▁not ▁subject ed ▁to ▁F CC ▁reg ulations ▁and ▁pressure ▁from ▁advert is ers , ▁and ▁often ▁require ▁a ▁subscription ▁to ▁view ▁them . ▁Some ▁networks ▁( such ▁as ▁Play boy ▁TV ) ▁are ▁devoted ▁exclus ively ▁to ▁" ad ult " ▁content , ▁specifically ▁por n ographic ▁material , ▁and ▁therefore ▁view ers ▁may ▁find ▁scenes ▁of ▁sim ulated ▁or ▁graph ic ▁sexual ▁inter course ▁and ▁n ud ity ▁on ▁such ▁channels . ▁ ▁C able ▁television ▁is ▁largely , ▁but ▁not ▁entirely , ▁un reg ulated . ▁C able ▁prov iders ▁must ▁include ▁local ▁over - the - air ▁stations ▁in ▁their ▁offer ings ▁on ▁each ▁system ▁( st ations ▁can ▁opt ▁to ▁gain ▁carriage ▁by ▁seeking ▁a ▁must - car ry ▁option ) ▁and ▁give ▁them ▁low ▁channel ▁numbers , ▁unless ▁the ▁stations ▁decide ▁to ▁demand ▁compens ation ▁of ▁any ▁sort ▁( through ▁re trans mission ▁consent ). ▁The ▁systems ▁cannot ▁carry ▁broadcast ▁network ▁affili ates ▁from ▁other ▁parts ▁of ▁the ▁country ▁( this ▁reg ulation ▁has ▁largely ▁been ▁open ly ▁ignored ▁in ▁recent ▁years ▁during ▁carriage ▁disput es ), ▁however ▁cable ▁systems ▁can ▁carry ▁stations ▁from ▁nearby ▁mark ets ▁if ▁there ▁are ▁no ▁local ▁stations ▁affili ated ▁with ▁one ▁of ▁the ▁major ▁networks ▁( though ▁this ▁is ▁becoming ▁far ▁less ▁common ▁with ▁the ▁shift , ▁particularly ▁since ▁ 2 0 0 6 , ▁towards ▁over - the - air ▁stations ▁carrying ▁one ▁network ▁affili ation ▁on ▁their ▁main ▁channel