[Jmirko]

"Our stylus and touch screen system are manufactured by Hanvon. Possible some other styluses of them could be compatible to ours, but I didn't investigate it."

I have tested this. Onyx devices are compatible with the Hanvon and PocketBook stiluses that I have tried. Ectaco should be compatible too, as they use Hanvon hardware. They are not compatible with Wacom Penabled styluses, such as those used by the older Irex devices. This is a pity, because I find those superior (less tip movement, more accuracy).

"I admit I'm confused with regard to the use of a Stabilo pen. I've searched the internet and found only the Stabilo SMARTball (for capacitive screens). Does this work with M96?"

No. What Booxtor means is that it is possible to increase the diameter of the stylus by inserting it in a traditional pen, to make it more comfortable. The brand doesn't matter - I used a ballpoint pen with sufficient internal diameter to accommodate the stylus. I cut off the tip of the pen so that the stylus tip can protrude from the inside, but not so much that it can fall out. If your pen has a clip, you can use it to attach it to the leather cover, so you don't lose it.