I'm using the "styliste" (F11 key) to modify partially the text display in a
cell (So I'm using the F11 function key to select the format I wish to apply to
the selected text)
It worked well in version OOo_2.2.1_Win32Intel_install_wJRE_fr, but not anymore
in OOo_2.4.1_Win32Intel_install_fr.

The whole text of a cell is considered as being of the same format ...which is
not applied when modified. So it is really tedious to have pretty presentation
of the text.

The modification by selection of the text then modifying font, color and so on
by the menu item works well. 

Thanks for your attention
Isabelle