Model & explanations
LANG attribute - human language
<P CLASS=en.us>
DIR attribute - default writing direction
<H2 DIR=ltr>
<BDO> element - bidi override
<SPAN> element - neutral element
<META http-equiv="content-type" content="text/html; charset=iso8859-2">
<Q> element - context-dependent quotes
<SUP> element - superscript