\starttypescriptcollection [myriadpro]

  \definefontfeature[emboldened][effect={width=0.18,delta=0.4,factor=0.3}]

  \starttypescript [sans] [myriadpro]
    \definefontsynonym [Sans]               [file:MyriadPro-Regular.otf]      [features=default]
    \definefontsynonym [SansItalic]         [file:MyriadPro-It.otf]           [features=default]
    \definefontsynonym [SansBold]           [file:MyriadPro-Bold.otf]         [features=default]
    \definefontsynonym [SansBoldItalic]     [file:MyriadPro-BoldIt.otf]       [features=default]
    \definefontsynonym [SansSlanted]        [file:MyriadPro-It.otf]           [features=default]
    \definefontsynonym [SansBoldSlanted]    [file:MyriadPro-BoldIt.otf]       [features=default]

    \definefontsynonym [SansEmboldened] [Sans] [features={default,emboldened}]
    \definefontfallback[FakeSansCaps]   [SansEmboldened] [0x0000-0xFFFF] [rscale=.8,method=uppercase]

    \definefontsynonym [SansCaps]       [file:MyriadPro-Regular.otf] [fallbacks=FakeSansCaps]
  \stoptypescript
  \starttypescript [myriadpro]
    \definetypeface [myriadpro] [ss] [sans]  [myriadpro] [default]
  \stoptypescript

\stoptypescriptcollection

\usetypescript[myriadpro]

\setupbodyfont[myriadpro,ss]

\starttext
  % scaled up 4 times to appreciate the thickness equalization
  \scale[sx=4,sy=4]{\sc RoLlErCoAsTeR TeXt.}\par
  \blank
  \scale[sx=4,sy=4]{\sc ��������������������.}\par
  \blank
  \scale[sx=4,sy=4]{\sc ��������������������.}\par
\stoptext
