Already your magnetic board had caused me a lot of trouble, but your marker does not like me either ... I put ten minutes before start succeed in finally see appear on my brother broke a table in the corner big pile of liquid white chalk and then write a few words reach and finally to draw stick figures, a dog, and even a teddy bear! But it was laborious! And the flow of ink (liquid white chalk if you prefer) is very irregular, and how to say? On a blackboard, it really shows a lot! Furthermore, I question the longevity of this pen given the amount used to write just a few words. However, I recognize that the deposited ink is easily removed with a soft, dry cloth. Conclusion: I'll learn to write smaller ...