Hi,
I'm using the Curve standard theme, and noticed that in the template for most themes the first lineas follow this template:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang=[b]"en"[/b] lang=[b]"en"[/b] dir="{LANG_DIR}">
<head>
<meta http-equiv="Content-Type" content="text/html; charset={CHARSET}" />
...
and, since the language is harcoded that means less accesibility and SEO.
I think that Coppermins could use the $lang_translation_info['lang_country_code'] tag in the language file to set it, in order to create better HTML code. I believe that it's a bad idea to change it in the theme templates by user, since new versions would revert those modifications.
Thanks in advance,
Jose Luis.