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-rw-r--r--pod/perliol.pod6
1 files changed, 6 insertions, 0 deletions
diff --git a/pod/perliol.pod b/pod/perliol.pod
index 8a41917224..eb6433a97a 100644
--- a/pod/perliol.pod
+++ b/pod/perliol.pod
@@ -736,6 +736,12 @@ look at the existing perlio layer implementations, which include:
=item * C implementations
+The F<perlio.c> and F<perliol.h> in the Perl core implement the
+"unix", "perlio", "stdio", "crlf", "utf8", "byte", "raw", "pending"
+layers, and also the "mmap" and "win32" layers if applicable.
+(The "win32" is currently unfinished and unused, to see what is used
+instead in Win32, see L<PerlIO/"Querying the layers of filehandles"> .)
+
PerlIO::encoding, PerlIO::scalar, PerlIO::via in the Perl core.
PerlIO::gzip and APR::PerlIO (mod_perl 2.0) on CPAN.