Thanks Davidfor for the explanations about "annotations"
!
For bookmarks I have understood the difference between epub stored in main memory and epub stored in the SD card...
First idea : if we delete the file that stores the bookmarks of epubs, what will happen (because if there is no file for epub in SD cards why should use one with main memory !) ? the informations will be read directly from database or be erased like if we have read a empty file ?
Second idea : when we open an epub, the file is read and all is copied in database... if, just after, we read the informations in database and then rewrite the file, might this be a solution? in this case, we must put a trigger in database if it's ok because the file should be rewrite each time a bookmark is added or deleted in database...
Do you know if a solution will be proposed in next FW ?