Is it possible to draw feature diagrams?
Most of the visual elements are already possible, only the grouped edges for the "Or" or "Alternative" relation of a feature diagram are missing:
I'm able to somehow reproduce the most notation elements, but now the "Or" or "Alternative" notation:
@startuml
rectangle "E-Shop" as eshop
rectangle Catalog
rectangle Payment
rectangle Security
rectangle Search
rectangle "Bank Transfer" as banktransfer
rectangle "Credit Card" as creditcard
rectangle High
rectangle Standard
eshop --@ Catalog
eshop --@ Payment
eshop --@ Security
eshop --0 Search
Payment -- banktransfer
Payment -- creditcard
Security -- High
Security -- Standard
@enduml
Below as a comment I proposed a syntax for the feature diagrams.