Based on some old request https://forum.plantuml.net/1047 a parameter strictuml was introduced to allow plantuml to be rendered according to more formal uml.org standard.
Other people have talked about the non-formal behaviour of plantuml https://twitter.com/_StephanRoth/status/1272663154040979463
Bases on this - I propose to use this ticket to gather all the information (currently implemented and yet to implement) with respect to the parameter
skinparam strictuml
