a paragraph with some text
first text node.
Split at cursor and move cursor 1 char to the right.
Replace paragraph contents with "abc|def".
Split at cursor, move cursor into span.
Move the current text node to the end
On key event (ff/webkit only)
On compositionstart event (ff only?)
Schedule in 3 seconds:
Delete Middle Paragraph
Delete "first text node"
Split "second |text node"
Empty the last br-filled paragraph and add some text
Wrap the word "paragraph" in the first para with a span