i found the Byte-order mask only for these encoding,
"FF FE" UCS-2LE or UTF-16LE
"FE FF" UCS-2BE or UTF-16BE
"EF BB BF" UTF-8
but i got a strange Byte order Mask while writing some utf8 format text into a utf8 format file
this is the BOM i got "e4 b8 ad " after i wrote in that utf8 format file.
check it for BOM in this site http://msdn.microsoft.com/library/default.asp?url=/library/en-us/intl/unicode_42jv.asp
the code i used is 
use Encode;
use Encode::HanConvert;
$str8=gb_to_simp("中国的网页");#the  str
+ing inside this is chinese characters
use utf8;
open OUT,">:utf8","D:\\output1.doc" or print "could not open";
print "\n",utf8::is_utf8($str8),"\n\n\n";
print OUT $str8;
close OUT;
no utf8;

[download]
Anyone tell me why this is happening,
i am wrinting in utf8 format only.but the Byte order mask shows different.why? help me in that.
The actual Byte order mask for utf8 is "EF BB BF".

In reply to how to determine the text file encoding by uva

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