Let's go back to a plain screen.

 <BODY> Something 
Classical</BODY> 


Something Classical


We can make things bold.

 <BODY> Something 
really <B>Classical</B> 
</BODY> 


Something Classical

What we are (more or less) telling the browser is: at the <B> start making things bold, and at the </B> stop making things bold.


The same principle applies to italics...

 
<BODY> Something <I>Classical</I> 
<B>cool</B> </BODY> 


Something Classical


...and underlining.

 <BODY> <U>Something</U> 
<B><I>Classical</I></B> </BODY> 


Something Classical


Back again to a plain screen.

 <BODY> Something Classical</BODY> 


Something Classical


We can use tags in combination if we want to.

 
<BODY> Something <I><B>Classical</B></I> 
</BODY> 


Something Classical

This is an example of nested tags. If you are going to use tag pairs in combination (which you will probably be doing quite a bit), then to avoid confusing the browser, they should be nested, not overlapping. Let me illustrate...

   <THIS><THAT></THIS></THAT>    Overlapping tags.... bad
   <THIS><THAT></THAT></THIS>    Nested tags.... good