HTML/CSS/Form Attributes/acceptcharset
"acceptcharset" provides a comma-separated list of the nonstandard character sets
<HTML>
<Title>Example For acceptcharset</Title>
<BODY>
<form name="form1" method="post" action="" acceptcharset="UTF-8">
<input type="text"
size=80
accept="image/gif"
value="If you type a character not in the list,
then the UTF-8 character set will be used">
</form>
</BODY>
</HTML>