Browser Beatings:
Wacky HTML

The classic example (currently) of this is the HTML 3.0 table. The ability to display HTML 3.0 tables has been put into Netscape 1.1 and NCSA Mosaic 2.0. However, just about all of the other browsers don't have the capability to display HTML 3.0 tables.
Thus,

<TABLE BORDER>
  <CAPTION>A test table with merged cells</CAPTION>
  <TR><TH ROWSPAN=2><TH COLSPAN=2>Average
      <TH ROWSPAN=2>other<BR>category<TH>Misc
  <TR><TH>height<TH>weight
  <TR><TH ALIGN=LEFT>males<TD>1.9<TD>0.003
  <TR><TH ALIGN=LEFT ROWSPAN=2>females<TD>1.7<TD>0.002
</TABLE>
produces 

A test table with merged cells Average other
categoryMisc heightweight males1.90.003 females1.70.002

instead of something that looks like anything like a real table. Definitely not very informative.

(the above code taken directly from the HTML 3.0 draft)

Likewise, HTML 3.0 has some specifications for doing complicated, good-looking equations. Unfortunately, with the exception of Arena, there are no browsers out there which can display the things.
Thus,

    <MATH>&int;_a_^b^{f(x)<over>1+x} dx</MATH>
ends up looking like

∫_a_^b^{f(x)1+x} d

instead of the pretty integral that Arena shows.

(again, the above code taken directly from the HTML 3.0 draft)

mikek@presence.com for World 3
Last Modified: 4/16/95