Unrelated, but this style he draws the timelines in: is it hand-written/hand-drawn, or software-generated? It certainly has the overall feel and appeal of bein

Unrelated, but this style he draws the timelines in: is it hand-written/hand-drawn, or software-generated? It certainly has the overall feel and appeal of being done by hand, but I'm not sure. If it's software, does anyone know which software, what's the name of this style, etc?