Frames are placed into a frameset column by column, from left to
right, and then row by row, from top to bottom—so the sequence
and number of <frame> tags inside a
<frameset> are important.
Netscape displays empty frames for <frame>
tags that do not contain an src document attribute
and for those trailing ones in a frameset that do not have an
associated <frame> tag. Such orphans,
however, remain empty; you cannot put content into them later, even
if they have a target name attribute for display
redirection.
Listed below are the basic attributes that can be used in the
<frame> tag.