Maybe I shouldn't speak in such a rude and infantile way, but I just can't bear it! Damn Myfaces!
    I confess that myfaces is a good and well-built open-source project, but sometimes the greatest people just can't think in a normal way! Last night I took 2 hours to solve a problem caused by the tag <t: inputhtml> , which is its automatical content cleaning-up with a single moving-on of the mouse. The problem means you should copy the original content at first when you want to use the tag for your html editing,  because the original content  will go with the wind when you softly move your mouse into the region of the main text area.
    I guess the reason why the tag was designed in that way is that the designer think it's convenient for user to create a brand new html content, but this is also a disaster for the add-few-words(just add a few words) work.What's more, the designer even forget to hold a parameter place to control it.So it's not so friendly to some users just like me.