\usemodule[abr-04]

\starttext

\disabledirectives[typesetters.casing.checkkerns]

This is about \TEX\ and not about \POSTSCRIPT.

\setbox0\ruledhbox{\POSTSCRIPT}

\enabledirectives[typesetters.casing.checkkerns]

This is about \TEX\ and not about \POSTSCRIPT.

\setbox2\ruledhbox{\POSTSCRIPT}

\box0\par\box2

\stoptext
