Sequence Diagram Editor Help

Unit Element

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A unit is a header element that represents a subsystem, component, unit, process, or other logical entity in a system. They are similar to objects but are displayed in a slightly different way (no underline).

Units are lifelined elements, which means they can send/receive messages and have actions, states, blocks, and timers associated with them.

Unit elements are added and modified using the Unit Input Form:

TIP: Pressing the Esc key will clear the contents of the input form and return the focus to the Type combo box. You can then select the type of element you want to add from the dropdown or by typing the first few letters of the desired selection.

Name	Name for the unit (must be unique in the diagram). The name is used to refer to this unit when adding body elements such as messages and states
Stereotype	Stereotype associated with the unit
Classifier	The classifier for the unit. Stores the messages, states, actions, and timers associated with the unit and used for auto-complete
New...	Create a new classifier to associated with the unit (see Creating Classifiers)
Text	Overrides the default display text for the unit which is a combination of the name and classifier. Leave blank to use the default display text
Display Name	Check to include the unit name in the default display text
Display Class	Check to include the classifier name in the default display text
Doc	Documentation for the unit (not included in diagram)
Padding Left	Additional padding (in inches) to the left of the unit
Padding Right	Additional padding (in inches) to the right of the unit