Go over it with a dry erase marker. It will re-liquefy the ink, and allow it to wipe off.
It may take multiple tries, but it really does work.
Edited by Krangala, 22 November 2017 - 02:06 AM.
Posted 22 November 2017 - 02:06 AM
Edited by Krangala, 22 November 2017 - 02:06 AM.