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-rw-r--r--lib/PerlIO.pm3
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/PerlIO.pm b/lib/PerlIO.pm
index 5777679bfa..9d1fa27f48 100644
--- a/lib/PerlIO.pm
+++ b/lib/PerlIO.pm
@@ -234,7 +234,8 @@ The following returns the B<names> of the PerlIO layers on a filehandle.
The layers are returned in the order an open() or binmode() call would
use them. Note that the "default stack" depends on the operating
-system and on the perl version.
+system and on the Perl version, and both the compile-time and
+runtime configurations of Perl.
The following table summarizes the default layers on UNIX-like and
DOS-like platforms and depending on the setting of the C<$ENV{PERLIO}>: