Anything before this line is plain C code which describes which headers
to include, and defines some convenience functions. No translations are
-performed on this part, it goes into the generated output C file as is.
+performed on this part, apart from having embedded POD documentation
+skipped over (see L<perlpod>) it goes into the generated output C file as is.
Anything after this line is the description of XSUB functions.
These descriptions are translated by B<xsubpp> into C code which