Fix 4: Add structure

To convey a logical model other than visually, use markup correctly. For example, write:

  <H1>9 May 1999 
      <IMG src="l1.gif" alt="Latest News"></H1>
  
  <UL>
  <LI>Coping With Asthma's Relentless ...

instead of:

  <B>9 May 1999</B> <IMG src="l1.gif">
  <BR>
  <P><LI>Coping With Asthma's Relentless Attacks: ...

Related checkpoints: 3.5, 3.6 [Priority 2].