Charcoal Glyph
Charcoal Glyph can be written with Charcoal Lump on most surfaces.
Usage
Pummelling Charcoal Lump on a surface of a node will make 1 of 8 Glyphs.
While holding Charcoal Lump, right click will change Glyph and left click will rotate it.
Different Types
So far, there are 8 Charcoal Glyph types: Cav, Fot, Geq, Mew, Niz, Odo, Prx, Yit.