Perl v5.6.1 is telling me it doesn't know the open modes '<:raw',
':raw', ':crlf', etc.:

  C:/>touch foo.bar
  C:/>perl -we 'use strict; open FH, "<:raw", "foo.bar" or die; <FH>;'
  Unknown open() mode '<:raw' at -e line 1.
  C:/>perl -we 'use strict; open FH, ":raw", "foo.bar" or die; <FH>;'
  Unknown open() mode ':raw' at -e line 1.
  C:/>perl -we 'use strict; open FH, ":crlf", "foo.bar" or die; <FH>;'
  Unknown open() mode ':crlf' at -e line 1.
  C:/>perl -v | head -8

  This is perl, v5.6.1 built for MSWin32-x86-multi-thread
  (with 1 registered patch, see perl -V for more detail)

  Copyright 1987-2001, Larry Wall

  Binary build 626 provided by ActiveState Tool Corp.
  Built 01:31:15 May  2 2001
  C:/>

What am I missing? Or doing wrong?

(I've reduced the problem to a simple command-line example, but
it's not working in my real script either.)

--
Jim Monty

Tempe, Arizona USA