write something in the notebook

write data to a text file

In Turkish, DAT or LOC?

locative - burada ne yazıyor

deftere yaz

kitaba yaz

kağıda yaz

aklına yaz

Ok, what about

                      read something in the book    ?

LOC yes but could you ever imagine ABL there?

kitaptan birşeyler oku.

i think the general rule here:

if the information going to somewhere, to a notebook or to a text file etc., then use "-e/a"

if the information coming from somewhere, from a book or from a newspaper etc., then use "-den/dan"

hytoon