
I'm not familiar with UML and so I don't know if such a diagram is possible.
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@OnlineVagrant now with Mermaid you can do a diagram like that with :
```mermaid
graph LR
A(( )) --> |"P(A)"| B(("P(A)"))
A --> |"P(膧)"| C(("P(膧)"))
B --> |"P(B|A)"| D(("P(B|A)"))
B --> |"P(B虅|A)"| E(("P(B虅|A)"))
C --> |"P(B|膧)"| F(("P(B|膧)"))
C --> |"P(B虅|膧)"| G(("P(B虅|膧)"))
```
But the height of the diagram can be problematic. Bug #2335
@daiyam The mermaid scaling is bad :( I can however achieve it with plantuml :)
Example
@startuml
left to right direction
( ) --> (R) : .75
( ) --> (R') : .25
R ---> (B) : 0.4
R ---> (B') :0.6
(R')---> (B ) : 0.9
(R')---> (B' ) : 0.1
@enduml
@OnlineVagrant I've the PR #2585 which fixes the height of mermaid diagrams.
It gives me that:

Would that be enough for your usage?
This is solved as of 0.14.0
@rokt33r has rewarded $54.00 to @nammn. See it on IssueHunt
???
@daiyam Please don't forget to submit your pr to IssueHunt.
I've put money again here and rewarded. https://github.com/BoostIO/Boostnote/issues/3419
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