NET ▁Framework ▁beginning ▁with ▁. NET ▁Framework ▁ 3 . 0 ▁ ▁The ▁Silver light ▁ 3 ▁version ▁ ▁The ▁Silver light ▁ 4 ▁version ▁ ▁The ▁Windows ▁ 8 ▁X AML / J up iter ▁version ▁ ▁These ▁versions ▁have ▁some ▁differences ▁in ▁the ▁parsing ▁behavior . ▁ ▁Additionally , ▁the ▁Silver light ▁ 4 ▁X AML ▁parser ▁is ▁not ▁ 1 0 0 % ▁back ward ▁compatible ▁with ▁Silver light ▁ 3 ▁files . ▁Silver light ▁ 3 ▁accepted ▁X AML ▁files ▁may ▁not ▁be ▁accepted ▁or ▁are ▁parsed ▁differently ▁by ▁the ▁Silver light ▁ 4 ▁parser . ▁ ▁Crit ic ism ▁of ▁X AML ▁GUI ▁usage ▁in ▁Silver light ▁The ▁European ▁Committee ▁for ▁Inter oper able ▁Systems ▁said ▁in ▁ 2 0 0 7 ▁that ▁Microsoft ' s ▁use ▁of ▁X AML ▁in ▁its ▁Silver light ▁product ▁aim ed ▁to ▁introduce ▁content ▁on ▁the ▁World ▁W ide ▁Web ▁that ▁could ▁only ▁be ▁accessed ▁from ▁the ▁Windows ▁platform . ▁Using ▁a ▁plugin , ▁X AML ▁is ▁view able ▁in ▁some ▁non - Microsoft ▁browsers ▁on ▁Windows , ▁Linux , ▁and ▁Mac ; ▁and ▁Microsoft ▁supported ▁Nov ell ' s ▁Silver light ▁vie wer ▁for ▁GNU / Linux ▁called ▁Moon light . ▁As ▁of ▁January ▁ 2 0 1 0 , ▁Moon light ▁ 2 ▁was ▁compatible ▁with ▁Silver light ▁ 2 , ▁but ▁development ▁of ▁Moon light ▁was ▁later ▁dis cont in ued . ▁ ▁See ▁also ▁ ▁Com parison ▁of ▁user ▁interface ▁markup ▁languages ▁ ▁EM ML ▁ ▁Interface ▁Bu