control, the typesetting macros provide
access to groff&#8217;s primitives in a way that&#8217;s consistent,
sensible, and easy to use.  With them, you can create individual
pages designed from the ground up.  Provided you have not signalled
to mom that you want document processing (via the
<a href="docprocessing.html#start">START</a>
macro; see below), every typesetting macro is a literal command
that remains in effect until you modify it or turn it off.  This
means that if you want to create flyers, surve