You can get there from here.

Ink pen goes in backpack when writing with digital pen and tablet. Luckily it didn't leave a mark.

Goes in the category of, Unfortunately, the analog pen-and-paper technology does not appear to be compatible with the digital version. Soap and water may be necessary if you continue to make this mistake. You may instead find the related tools "printer" and "scanner" useful to convert from one to the other.

I knew this day would come eventually. It was sort of a matter of time. Back to Brillouin zones and de Haas-van Alphen oscillations.