I'm using the following:

\def\chap#1#2{\vbox{Chapter #1\crlf\framed[frame=off,topframe=on]{#2}}}

for my chapter headings.  But one chapter: "Answers to Exercises" I want unnumbered, without the "Chapter" text, and also in the table of contents.

Can anybody point me to the simplest way of achieving this?  (I've tried various combinations of \setuphead, \definehead, but nothing so far has given me what I want.)


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