<HR SIZE=1>
<HR SIZE=2> is the default setting
<HR SIZE=3>
<HR SIZE=10>
<HR WIDTH=100>
<HR WIDTH=200>
Default alignment for HR is CENTER:
<HR WIDTH=400>
<HR WIDTH=400 ALIGN=LEFT>
There is no default width. HR of unspecified width extends to the edge of the page. My approximation for standard window size is < HR WIDTH=470 >.
<HR WIDTH=470 ALIGN=LEFT>
Scaling width by percentage (50% != .50):
<HR WIDTH=50%>
<HR WIDTH=.50>
this is a <HR SIZE=5 WIDTH=400 ALIGN=CENTER>
this is a <HR NOSHADE>
A good starter collection of images created for this use is Randy Ralph's Bars and Banners.
