Hi, the \grabuntil command fails when it uses \begincsname to create the delimiter. \unprotect \protected\def\grabuntil#1%  %{\expandafter\syst_helpers_grab\expandafter{\begincsname#1\endcsname}}   {\expandafter\syst_helpers_grab\expandafter{\csname#1\endcsname}} \protect \def\starttest{\grabuntil{stoptest}\quotation} \starttext \starttest xxx \stoptest \stoptext Wolfgang