Issue 49278

Hi!
We are a group of teachers in France in charge of instructing other teachers on
how to use computer presentation in class.
We are all in favor of Open Office, however we have to promote Powerpoint (sorry
:-) ) because of one feature which is absolutely essential to us and that
Impress does not offer.
Very often, we have to have the text inside an object appear and disappear
several times in order to have the students repeat.
We do that by creating a text zone. Then we select the text only (not the zone),
add an "appear" effect,  and with "start the animation by a click on " we choose
the object text zone. We do the same thing with the animation "disappear".
With Powerpoint (sorry again), we can make the text appear and disappear as
often as we want by clicking on the same object.
With Impress, it works just once.
It may be a bug of PPT, but it's indispensable for us. Is it possible for you to
 program that possibility?
It would allow us to promote Open Office to hundreds of teachers and through hem
to thousands of students.
Thanks.

Thanks for an answer.
P.S. 
I would like to attach a one slide demo presentation, but I don't see any
attachment link on this page. If it comes after clicking on sublit, I will.