http://www.unicode.org/reports/tr9/
The central difference from the original First Strong algorithm is that this
implementation decides the paragraph direction based on the first strong
character that is typed into the paragraph, regardless of its
location in the paragraph, as opposed to the original algorithm where it is
the first character in the paragraph by location, regardless of
whether other strong characters already appear in the paragraph, further its
start.
Please note that this plugin does not perform the direction change
itself. Rather, it fires editor commands upon the key up event when a
direction change needs to be performed; goog.editor.Command.DIR_RTL
or goog.editor.Command.DIR_RTL.">Also See:
Returns:boolean
Does the given node represent a Block element from the
point of view of FireFox? Notice we do not consider list items as Block
elements in the algorithm.