package PerlIO;
+our $VERSION = '1.01';
+
# Map layer name to package that defines it
-my %alias = (encoding => 'Encode');
+our %alias;
sub import
{
$in = <F>;
close(F);
+=item bytes
+
+This is the inverse of C<:utf8> layer. It turns off the flag
+on the layer below so that data read from it is considered to
+be "octets" i.e. characters in range 0..255 only. Likewise
+on output perl will warn if a "wide" character is written
+to a such a stream.
+
=item raw
A pseudo-layer which performs two functions (which is messy, but
and their way things have been documented elsewhere).
Firstly it forces the file handle to be considered binary at that
-point in the layer stack,
+point in the layer stack, i.e. it turns off any CRLF translation.
Secondly in prevents the IO system seaching back before it in the
layer specification. Thus:
Forces the use of C<perlio> layer even if the platform default, or
C<use open> default is something else (such as ":encoding(iso-8859-7)")
-which would interfere with binary nature of the stream.
+(the C<:encoding> requires C<use Encode>) which would interfere with
+binary nature of the stream.
=back