More Physical Style Elements
Netscape supports several attributes that control how the horizontal rule is displayed. SIZE sets the thickness of the line. WIDTH sets the width of the line in characters or as a percentage of the current Netscape window width. ALIGN can be set to left, right or center to control justification of the rule. NOSHADE turns off the default shading. Here are a couple of examples:
<HR WIDTH=50% ALIGN=right>
<HR NOSHADE WIDTH=20 ALIGN=center>
The break tag has a CLEAR attribute which ensures that the next line will be completely left justified (necessary to compensate for Netscape floating images, around which text normally wraps).
The no break tag ensures that the marked text will not be wrapped.
The word break tag indicates that a word can be broken if needed, but does not cause a break like the BReak tag.
None of these tags/attributes are part of the current HTML 3 Specification.