This test uses FormatBlock to apply the dl tag to a range of paragraphs with different block tags.

before FormatBlock:
| "
"
| <pre>
|   id="start"
|   "Fo<#selection-anchor>o"
| "
"
| <div>
|   "bar"
|   <br>
|   <span>
|     "baz"
|   <br>
|   "raz"
| "
dar
"
| <br>
| "
"
| <address>
|   id="end"
|   "ya<#selection-focus>r"
| "
"

after FormatBlock:
| "
"
| <dl>
|   "Fo<#selection-anchor>o"
| "
"
| <div>
|   <dl>
|     "bar"
|   <span>
|     <dl>
|       "baz"
|   <dl>
|     "raz"
| <dl>
|   "dar"
|   " "
| "
"
| <dl>
|   "ya<#selection-focus>r"
| "
"