the needs

the needs wo want include watermark.....bookmark...... graffiti。。。。catalogue，search.
but demo has not show what i want,

Hi,
.bookmark...... graffiti。。。。catalogue，search. method is inRDPDFViewController，you can check methods below:
viewMenu
searchView
composeFile

when i tap on the button , it answers This Document is readonly

Try use itunes import another file.

Hi,

you can edit files only in a writable folder, like Documents folder.
If you are opening a pdf file from assets, the message "This Document is readonly" is correct.

it seems very hard