tup section.  Comments appearing in the first two sections
apply to the entire document while comments in the BeginPageSetup
section apply only to a single page.</p>
<p>For comments to appear in the header section, this function should
be called after the surface is created, but before a call to
<a class="link" href="cairo-PostScript-Surfaces.html#cairo-ps-surface-dsc-begin-setup" title="cairo_ps_surface_dsc_begin_setup ()"><code class="function">cairo_ps_surface_dsc_begin_setup()</code></a>.</p>
<p>For co