=head1 DESCRIPTION
Perl's source code should use the above functions instead of those
-defined in ANSI C's I<stdio.h>, I<perlio.h> will the C<#define> them to
+defined in ANSI C's I<stdio.h>. The perl headers will C<#define> them to
the I/O mechanism selected at Configure time.
The functions are modeled on those in I<stdio.h>, but parameter order
=item B<PerlIO *>
-This takes the place of FILE *. Unlike FILE * it should be treated as
+This takes the place of FILE *. Like FILE * it should be treated as
opaque (it is probably safe to assume it is a pointer to something).
=item B<PerlIO_stdin()>, B<PerlIO_stdout()>, B<PerlIO_stderr()>
=item B<PerlIO_printf(f,fmt,...)>, B<PerlIO_vprintf(f,fmt,a)>
-These are is fprintf()/vfprintf equivalents.
+These are fprintf()/vfprintf() equivalents.
=item B<PerlIO_stdoutf(fmt,...)>
=item B<PerlIO_setlinebuf(f)>
This corresponds to setlinebuf(). Use is deprecated pending
-further discussion. (Perl core uses it I<only> when "dumping"
-is has nothing to do with $| auto-flush.)
+further discussion. (Perl core uses it I<only> when "dumping";
+it has nothing to do with $| auto-flush.)
=back