This tests the ability to start editing in blocks that are visible, but have little or no content. Each of the divs below should be able to accept a caret.

This div contains some text.

hello

This div is completely empty.

This div contains some collapsable whitespace (a '\n').

This div contains a self-closing p tag.

This div contains a self-closing p tag and some collapsable whitespace (two '\n's before and after the self closing p.