Eraser tool and bookmarks option
An eraser tool would be excelent , i always have to use "undo option" for all of my adnotations , which is quite frustrating because sometime it will clear all my word, not only a letter. and also not handy at all.
Also would be great to introduce "create a bookmark option" - because sometime there are long documents that you have to make your own bookmarks as you do on android ( would be great if you could name them yourself , that isn't even on android).
And special bookmark button would be great too