w3c icon + 2.0 3.0 3.2 4.0
Netscape icon 1.0 2.0 3.0 4.0  
MSIE icon 1.0 2.0 3.0 4.0  
Mosaic icon 1.0 2.0      
Opera 1.0 2.1 3.0    
WebTV 0.9 1.2      

<br>

empty
CSS: block element
start tagrequired
end tagforbidden
Sandia Reference
Link to Site Map

The <br> element forces <br>
a new line.

none
w3c icon + 2.0 3.0 3.2 4.0
MSIE icon 1.0 2.0 3.0 4.0  
this is the standard use of <br>
class=
w3c icon + 2.0 3.0 3.2 4.0
Netscape icon 1.0 2.0 3.0 4.0  
MSIE icon 1.0 2.0 3.0 4.0  
WebTV 0.9 1.2      
clear=
w3c icon + 2.0 3.0 3.2 4.0
Netscape icon 1.0 2.0 3.0 4.0  
MSIE icon 1.0 2.0 3.0 4.0  
Opera 1.0 2.1 3.0    
WebTV 0.9 1.2      
instead of putting text in a single line, this attribute forces <br> to put in a vertical blank space so that the following text will be displayed flush left, past any floating images that may be in the way.
"all"
w3c icon + 2.0 3.0 3.2 4.0
MSIE icon 1.0 2.0 3.0 4.0  
Opera 1.0 2.1 3.0    
<img src="max.jpg" align="left"><img src="max.jpg" align="right"><br clear="all">

"inserts space so that the next text appears aligned with both margins, directly below all floating images.
"left"
w3c icon + 2.0 3.0 3.2 4.0
MSIE icon 1.0 2.0 3.0 4.0  
Opera 1.0 2.1 3.0    
<img src="max.jpg" align="left"><br clear="left">

"inserts space so that the next text appears aligned with the left margin directly below a left-aligned floating image." (Microsoft)
"none"
MSIE icon 1.0 2.0 3.0 4.0  
no description given in the MSIE 3.0 DTD.
"right"
w3c icon + 2.0 3.0 3.2 4.0
MSIE icon 1.0 2.0 3.0 4.0  
Opera 1.0 2.1 3.0    
<img src="max.jpg" align="right"><br clear="right">

"inserts space so that the next text appears aligned with the right margin, directly below a right-aligned floating image." (Microsoft)
"## en"
w3c icon + 2.0 3.0 3.2 4.0
<img src="max.jpg" align="left"><img src="max.jpg" align="right"><br clear="40 en">
"move down until there is at least 40 en units free" (w3). Any attempt to get it to work resulted in a mess.
"### pixels"
w3c icon + 2.0 3.0 3.2 4.0
<img src="max.jpg" align="left"><img src="max.jpg" align="right"><br clear="100pixels">
"move down until there is at least 100 pixels" (w3). The same mess as above. Maybe some day?
id=
w3c icon + 2.0 3.0 3.2 4.0
Netscape icon 1.0 2.0 3.0 4.0  
MSIE icon 1.0 2.0 3.0 4.0  
lang=
w3c icon + 2.0 3.0 3.2 4.0
Netscape icon 1.0 2.0 3.0 4.0  
MSIE icon 1.0 2.0 3.0 4.0  
list of language codes
list of country codes
style=
w3c icon + 2.0 3.0 3.2 4.0
Netscape icon 1.0 2.0 3.0 4.0  
MSIE icon 1.0 2.0 3.0 4.0  
title=
w3c icon + 2.0 3.0 3.2 4.0