
single grammar, for example:</P>

<PRE>   COMMENTS FROM &quot;/*&quot; TO &quot;*/&quot; NESTED
   COMMENTS FROM &quot;//&quot; TO eol
   IGNORE CHR(9) .. CHR(13)
</PRE>

<P>The set of ignorable characters in this example is that which includes the
standard white space separators in ASCII files.  The null character CHR(0)
should not be included in any ignorable set.  It is used internally by Coco/R
to mark the end of the input file.</P>

<P><B>Pragmas</B>. Pragmas, like comments, are tokens that may occur 