Locally inline LineColor and LineStyle management, note placement, beta-style, and sub-diagram issues

Question

Hello PlantUML team,

Adapted from the functionality of node style line (locally inline LineColor and LineStyle management), with:

• https://forum.plantuml.net/1487/support-for-node-line-style-in-state-diagrams?show=1491#a1491
• https://forum.plantuml.net/5340/please-provide-a-way-to-inline-style-use-cases-border-color?show=5341#a5341

And Thanks for the pointers:

• https://forum.plantuml.net/7140/missing-features-documentation-continuation
• https://github.com/plantuml/plantuml/issues/261

And with the today’s test (on v1.2020.13):

[Click to see code on PlantUML online server]

We have got a lot of questions… Sorry for that  :

1. See all the notes on the diagram (where we mention KO)
2. Why only the first note is on left? And not the followings! When all the notes should be on the left.
3. Why are there 2 syntax depending of the type of diagram?
   • #red|green ##[dashed]blue for state or class diagram
   • #red|green;line.dashed;line:blue for component and deployement diagram
4. Why when we hide an element and if the element is alone on a group: the father element is also hidden? (see element 'FooDashed24_KO')?
5. The beta-style does not work with group and sub-diagram (see specific minimal issue n°11735:
   • https://forum.plantuml.net/11735/beta-style-backgroundcolor-doesnt-group-components-diagram)

Thanks for yours works,
Regards,
Th.