I have a PB903 and would like to work with your "pi".
I tried to work with it like this:
1. when I start the program, "Long OK..." is shown
2. in the menu, I select "File->New" and get a blank page with the keyboard opened
3. I type in a line and finish by clicking the return button on the keyboard
The line is placed on top of the sheet and the keyboard disappears.
I would have expected that the keyboard remains and I can continue by typing the next line.
4. I worked around that problem by "menu->Edit->Insert After"
a new line was created which I could edit.
With the down cursor I marked the new line and continued with 4.
5. for saving I selected "menu->File->Save"
the appearing dialog shows a lot of unknown folders. I was not able to find my own folders.
appart from that, I could not find out how to name the file.
Can you give me some hints how to work with it?