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RAAB / SGMLSpm-1.1 / DOC / HTML / sgmlspl / output.html 
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<TITLE>Why does sgmlspl use output instead of
print?</TITLE>
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<H1>Why does <A HREF=sgmlspl.html><TT>sgmlspl</TT></A> use <TT>output</TT> instead of
<TT>print</TT>?</H1>

<P><A HREF=sgmlspl.html><TT>sgmlspl</TT></A> uses a special <A HREF="http://www.metronet.com/0/perlinfo/perl5/manual/perl.html"><TT>perl5</TT></A> library <A HREF=output.html><TT>SGMLS::Output</TT></A> for
printing text.  <A HREF=output.html><TT>SGMLS::Output</TT></A> exports the subroutines
<TT>output(<IT>string</IT>...)</TT>,
<TT>push_output(<IT>type</IT>[,<IT>data</IT>])</TT>,
and <TT>pop_output</TT>.  The subroutine
<TT>output</TT> works much like the regular <A HREF="http://www.metronet.com/0/perlinfo/perl5/manual/perl.html"><TT>perl5</TT></A> function
<TT>print</TT>, except that you are not able to specify a
file handle, and you may include multiple strings as arguments.</P>

<P>When you want to write data to somewhere other than
<TT>STDOUT</TT> (the default), then you use the subroutines
<A HREF=pushoutput.html><TT>push_output</TT></A> and
<A HREF=popoutput.html><TT>pop_output</TT></A> to set
a new destination or to restore an old one.</P>

<P>You can use the <A HREF=output.html><TT>SGMLS::Output</TT></A> package in other programs by adding
the following line:</P>

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<PRE>use SGMLS::Output;</PRE>
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<ADDRESS>David Megginson <A HREF="mailto:dmeggins@aix1.uottawa.ca">&lt;dmeggins@aix1.uottawa.ca&gt;</A></ADDRESS>
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