Hello GeoffR,
thank you for identifying the base address and the remaining characters of the top row.
I thought about that only after I had already posted my layout patch, by then it was already late at night and I moved it to 'later'. Now I can customize the top row a bit more and move in some characters I like better than the ones there

.
Your patch collection is awesome and makes the Kobos even better than they already where.
Thanks a lot!