ography ▁ ▁References ▁ ▁External ▁links ▁▁ ▁Category : 1 9 5 1 ▁birth s ▁Category : L iving ▁people ▁Category : R oman ian ▁male ▁film ▁actors <0x0A> </s> ▁Inter le aved ▁Bitmap ▁( IL B M ) ▁is ▁an ▁image ▁file ▁format ▁conform ing ▁to ▁the ▁Inter change ▁File ▁Format ▁( I FF ) ▁standard . ▁The ▁format ▁origin ated ▁on ▁the ▁Am iga ▁platform , ▁and ▁on ▁IBM - compatible ▁systems , ▁files ▁in ▁this ▁format ▁or ▁the ▁related ▁P B M ▁( Plan ar ▁Bitmap ) ▁format ▁are ▁typically ▁encountered ▁in ▁games ▁from ▁late ▁ 1 9 8 0 s ▁and ▁early ▁ 1 9 9 0 s ▁that ▁were ▁either ▁Am iga ▁ports ▁or ▁had ▁their ▁graph ical ▁assets ▁designed ▁on ▁Am iga ▁machines . ▁ ▁A ▁characteristic ▁feature ▁of ▁the ▁format ▁is ▁that ▁it ▁stores ▁bit maps ▁in ▁the ▁form ▁of ▁inter le aved ▁bit ▁plan es , ▁which ▁gives ▁the ▁format ▁its ▁name ; ▁this ▁reflect s ▁the ▁way ▁the ▁Am iga ▁graphics ▁hardware ▁n atively ▁reads ▁graphics ▁data ▁from ▁memory . ▁A ▁simple ▁form ▁of ▁compression ▁is ▁supported ▁to ▁make ▁IL B M ▁files ▁more ▁compact . ▁ ▁On ▁the ▁Am iga , ▁these ▁files ▁are ▁not ▁associated ▁with ▁a ▁particular ▁file ▁extension , ▁though ▁as ▁they ▁started ▁being ▁used ▁on ▁PC ▁systems ▁where ▁extensions ▁are ▁system atically ▁used , ▁they ▁employed ▁a ▁. l bm ▁or ▁occasionally ▁a ▁. bb m ▁extension . ▁ ▁File ▁format ▁ ▁IL B M ▁is ▁an ▁implementation ▁of