Use of Text, Color, Size and Lines in Diagram

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BPMN elements (e.g. Flow objects) MAY have labels (e.g., its name and/or other attributes) placed inside the shape, or above or below the shape, in any direction or location, depending on the preference of the modeler or modeling tool vendor.

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The fills that are used for the graphical elements MAY be white or clear.

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The notation MAY be extended to use other fill colors to suit the purpose of the modeler or tool (e.g., to highlight the value of an object attribute). However,

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The markers for “throwing” Events MUST have a dark fill (see “End Event” on page 253 and “Intermediate Event” on page 257 for more details).

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Participant Bands for Choreography Tasks and Choreography Sub-Processes that are not the initiator of the Activity MUST have a light fill (see “Choreography Task” on page 333 and “Choreography Sub-Process” on page 338 for more details).

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Flow objects and markers MAY be of any size that suits the purposes of the modeler or modeling tool.

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The lines that are used to draw the graphical elements MAY be black.

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The notation MAY be extended to use other line colors to suit the purpose of the modeler or tool (e.g., to highlight the value of an object attribute).

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The notation MAY be extended to use other line styles to suit the purpose of the modeler or tool (e.g., to highlight the value of an object attribute) with the condition that the line style MUST NOT conflict with any current BPMN defined line style. Thus, the line styles of Sequence Flow, Message Flow, and Text Associations MUST NOT be modified or duplicated.