Portal
When I was tired, to study for my final exams in high school, I decided spend my time wisely (? 🙂 ), sitting on the ladder and then draw with only a pencil on the ceiling. As the result, this over 2.5 meters drawing of, what I call portal. Is just some weird abstraction throw out, when my mind was too occupied with other things and needed to stress relief 😀
Some face
Pencil drawn.
See Also: OPC iFIX, SCADA Training Manual.pdf
