.P
Here's a simple block:
.P
This should be a code block, though:
.VERBON 2
<div>
    foo
</div>
.VERBOFF
.P
As should this:
.VERBON 2
<div>foo</div>
.VERBOFF
.P
Now, nested:
.P
This should just be an HTML comment:
.P
Multiline:
.P
Code block:
.VERBON 2
<!-- Comment -->
.VERBOFF
.P
Just plain comment, with trailing spaces on the line:
.P
Code:
.VERBON 2
<hr />
.VERBOFF
.P
Hr's:
.P

.P
 
.P