What visibility is available for elements?
Different settings are available for the specifying visibility of elements.
Public (+)
The element is visible for all other model elements and is given a plus symbol (+).
Private (-)
The element is visible only for the source element and is given a minus symbol (-).
Protected (#)
The element is visible for all derivatives of the source element and is given a hash symbol (#).
Package (~)
The element is visible for all elements in the source package and is given a tilde (~).