Ceiling design for the café in the International Atelierhaus Salzamt, Linz/A.
first sketch
The drawing presents a cloud reaching over the arched roof, as a reference to baroque ceiling painting. Several details overlap the cloud like intersections and turn it into a diagram - clouds in different contexts.
Some images show clouds in the narrower sense, other ones dust and clouds of smoke, contrails, dust bunnies or the internet cloud (the internet is mostly depicted as a cloud in computer network diagrams).