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<A HREF="intro.html"><FONT COLOR="#FFFFFF">1 Introduction</FONT></A><BR>
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<P><FONT SIZE="5">3.21 Scanner/Parser Interface</FONT><BR>
<P>If the scanner terminates without any errors, control
is passed to the parser. The parser parses the token list
generated by the scanner. The token list consists of text
scraps, freestanding typesetter directives, and special
sequence tokens.
<P>The user should bear in mind that <I>the scanner
finishes running before the parser starts running.</I> This
means that the scanner cannot be influenced in any way by
higher order structures such as the parser might parse. For
example, it is impossible to write a FunnelWeb macro to
include a file, or to write a macro that inserts a
<SAMP>vskip</SAMP> pragma into the input text.
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