\enabletrackers[chemistry.boundingbox]
% \enabletrackers[chemistry.metapost]
% \enabletrackers[chemistry.structure]
% \enabletrackers[chemistry.textstack]

\setupchemical
  [axis=on]

\starttext

\startbuffer
\startchemical \chemical[SIX,B] \stopchemical
\stopbuffer
\typebuffer \ruledhbox{\getbuffer}

\startbuffer
\startchemical [left=none,right=4cm] \chemical[SIX,B] \stopchemical
\stopbuffer
\typebuffer \ruledhbox{\getbuffer}

\startbuffer
\startchemical [right=none] \chemical[SIX,B] \stopchemical
\stopbuffer
\typebuffer \ruledhbox{\getbuffer}

\startbuffer
\startchemical [right=2mm] \chemical[SIX,B] \stopchemical
\stopbuffer
\typebuffer \ruledhbox{\getbuffer}

\startbuffer
\startchemical [left=none] \chemical[SIX,B] \stopchemical
\stopbuffer
\typebuffer \ruledhbox{\getbuffer}

\startbuffer
\startchemical [width=none] \chemical[SIX,B] \stopchemical
\stopbuffer
\typebuffer \ruledhbox{\getbuffer}

\startbuffer
\startchemical [width=.1] \chemical[SIX,B] \stopchemical
\stopbuffer
\typebuffer \ruledhbox{\getbuffer}

\startbuffer
\startchemical [height=none] \chemical[SIX,B] \stopchemical
\stopbuffer
\typebuffer \ruledhbox{\getbuffer}

\startbuffer
\startchemical [bottom=none] \chemical[SIX,B] \stopchemical
\stopbuffer
\typebuffer \ruledhbox{\getbuffer}

\startbuffer
\startchemical [top=none] \chemical[SIX,B] \stopchemical
\stopbuffer
\typebuffer \ruledhbox{\getbuffer}

\startbuffer
\startchemical [height=.1] \chemical[SIX,B] \stopchemical
\stopbuffer
\typebuffer \ruledhbox{\getbuffer}

\stoptext
