\definefontfeature
  [solution-demo]
  [goodies=demo,
   featureset=default]

\definefont
  [SomeTestFont]
  [texgyrepagellaregular*solution-demo at 10pt]

\definefontsolution
  [solution-a]
  [goodies=demo,
   solution=experimental,
   method={normal,preroll},
   criterium=1]

\definefontsolution
  [solution-b]
  [goodies=demo,
   solution=experimental,
   method={normal,preroll,split},
   criterium=1]

\starttext

% \enabletrackers[builders.paragraphs.solutions.splitters.splitter]
\enabletrackers[builders.paragraphs.solutions.splitters.colors]
% \enabletrackers[builders.paragraphs.solutions.splitters.optimizer]

\startsimplecolumns
  \showfontkerns
  \setuptolerance[verytolerant]
  \start  \SomeTestFont
    \input zapf \par
  \stop
  \column
  \start  \SomeTestFont \startfontsolution[solution-a]
    \input zapf \par
  \stopfontsolution \stop
\stopsimplecolumns

\stoptext
