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The vector stencils library "UML class diagrams" contains 38 symbols for the ConceptDraw PRO diagramming and vector drawing software.
"... classes are represented with boxes which contain three parts:
(1) The top part contains the name of the class. It is printed in Bold, centered and the first letter capitalized.
(2) The middle part contains the attributes of the class. They are left aligned and the first letter is lower case.
(3) The bottom part gives the methods or operations the class can take or undertake. They are also left aligned and the first letter is lower case. ...
To indicate a classifier scope for a member, its name must be underlined. ...
An association can be named, and the ends of an association can be adorned with role names, ownership indicators, multiplicity, visibility, and other properties. ...
Aggregation ... is graphically represented as a hollow diamond shape on the containing class end of the tree with a single line that connects the contained class to the containing class.
... graphical representation of a composition relationship is a filled diamond shape on the containing class end of the tree of lines that connect contained class(es) to the containing class.
... graphical representation of a Generalization is a hollow triangle shape on the superclass end of the line (or tree of lines) that connects it to one or more subtypes.
... graphical representation of a Realization is a hollow triangle shape on the interface end of the dashed line (or tree of lines) that connects it to one or more implementers. A plain arrow head is used on the interface end of the dashed line that connects it to its users.
Multiplicity ... representation of an association is a line with an optional arrowhead indicating the role of the object(s) in the relationship, and an optional notation at each end indicating the multiplicity of instances of that entity (the number of objects that participate in the association).
Entity classes ... are drawn as circles with a short line attached to the bottom of the circle. Alternatively, they can be drawn as normal classes with the «entity» stereotype notation above the class name." [Class diagram. Wikipedia]
The example "Design elements - UML class diagrams" is included in the Rapid UML solution from the Software Development area of ConceptDraw Solution Park.

The vector stencils library "Gateways" contains 8 symbols of exclusive, event-based, parallel, inclusive and complex gateways.
Use these shapes for creating the business process diagrams using the ConceptDraw PRO diagramming and vector drawing software.
"Gateway.
A gateway is represented with a diamond shape and determines forking and merging of paths, depending on the conditions expressed.
Exclusive.
Used to create alternative flows in a process because only one of the paths can be taken, it is called exclusive.
Event Based.
The condition determining the path of a process is based on an evaluated event.
Parallel.
Used to create parallel paths without evaluating any conditions.
Inclusive.
Used to create alternative flows where all paths are evaluated.
Exclusive Event Based.
An event is being evaluated to determine which of mutually exclusive paths will be taken.
Complex.
Used to model complex synchronization behavior.
Parallel Event Based.
Two parallel process are started based on an event but there is no evaluation of the event." [Business Process Model and Notation. Wikipedia]
The example "Design elements - Gateways BPMN 2.0" is included in the Business Process Model and Notation solution from the Business Processes area of ConceptDraw Solution Park.