Would saving (cmd+s) make pix_data forget a pointer, as in [text] or [array] objects when using pointers? (also, perhaps the [pointer] object itself, but I havent tested this) > On Feb 28, 2018, at 9:54 AM, IOhannes m zmölnig <zmoelnig at iem.at> wrote: > > [pix_data] remembers that pointer