UML Class Diagram

Class Visibility

Public (+)
Private (-)
Protected (#)
Package (~)
Derived (/)
Static (underlined)

0	No instances (rare)
0..1	No instances, or one instance
1	Exactly one instance
1..1	Exactly one instance
0..*	Zero or more instances
*	Zero or more instances
1..*	One or more instances

https://en.wikipedia.org/wiki/Class_diagram