User identity and authorization

SSI
https://www.windley.com/archives/2018/09/multi-source_and_self-sovereign_identity.shtml

Confused deputy problem
https://en.wikipedia.org/wiki/Confused_deputy_problem

Capability-Based Access Control
http://www.cis.syr.edu/~wedu/Teaching/CompSec/LectureNotes_New/Capability.pdf

Graphviz

https://www.katrinasiegfried.com/single-post/2018/10/24/Installing-GraphViz-on-Linux-Ubuntu-1804LTS

https://www.tonyballantyne.com/graphs.html#orgheadline12

https://graphviz.gitlab.io/documentation/

https://graphs.grevian.org/example

https://graphviz.gitlab.io/_pages/pdf/dotguide.pdf

Visualizer
https://graphs.grevian.org/graph/5124187289026560