Adding epub format to document

[Manooch]

Hi everyone . i am from iran and my english is not so good . then excuse me if my words isnt so exact .
i want to see EPUB files in the document part .
when you click on the " document " mark , it shows only pdf files .
i went to option ( files list ) and tried to add epub to the list .
But I was not successful . because when i did click on the " add " , opens a window ( like you want to open a file )
I hope I was able to get my mean .
thank you

[horst.epp]

Search / Organize Filters...
Select Document
Press Edit button
Add ;epub extension at the end of the Search field
Press Ok button

[Manooch]

thank you very much