▁styles : ▁Java / C # / J avascript , ▁Python , ▁and ▁Visual ▁Basic . ▁ ▁The ▁program ▁features ▁a ▁GUI ▁split ▁in ▁two ▁sub - windows . ▁In ▁the ▁first ▁sub - window , ▁the ▁user ▁can ▁type ▁code ▁to ▁be ▁executed ▁in ▁the ▁J ero o ▁environment . ▁In ▁the ▁second ▁sub - window , ▁the ▁user ▁can ▁see ▁the ▁effects ▁of ▁their ▁code ▁in ▁a ▁graph ical ▁environment . ▁The ▁second ▁sub - window ▁shows ▁an ▁island ▁populated ▁by ▁J ero os . ▁The ▁user ▁can ▁instruct ▁the ▁J ero os , ▁via ▁programming ▁in ▁the ▁first ▁sub - window , ▁to ▁accomplish ▁various ▁actions ▁such ▁as ▁moving , ▁e ating ▁or ▁pick ing ▁up ▁flowers . ▁ ▁The ▁tool ▁received ▁a ▁NE ED S ▁" P rem ier ▁Award ▁W inner ▁Associ ate ▁Editor ' s ▁Cho ice " ▁in ▁ 2 0 0 4 . ▁ ▁J ero o ▁uses ▁many ▁different ▁methods ▁to ▁eng age ▁its ▁students ▁such ▁as ▁story t elling ▁and ▁anim ating ▁execution . ▁The ▁program ▁has ▁been ▁looked ▁at ▁as ▁a ▁very ▁useful ▁and ▁efficient ▁tool ▁to ▁develop ▁experience ▁and ▁knowledge ▁in ▁Computer ▁Program ming . ▁There ▁have ▁also ▁been ▁many ▁Computer ▁Science ▁compet itions ▁involving ▁the ▁J ero o ▁program ▁and ▁its ▁features . ▁ ▁Comm ands ▁A ▁J ero o ▁can ▁do ▁a ▁few ▁of ▁things ▁such ▁as : ▁ ▁See ▁also ▁ ▁List ▁of ▁educational ▁programming ▁languages ▁ ▁References ▁ ▁External ▁links ▁J ero o ▁official ▁home ▁page ▁J