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component diagram
subject			fact

component diagram	has definition A UML diagram showing components and their relationships
	is a subtopic of 5.1 - What is UML?
	is a kind of UML diagram
	shows how the various components of systems are arranged logically and physically
UML diagram	describes aspects of the architectural model
	has part constraint
	has part note
	see also Unified Modelling Language
diagram	has advantages it conveys or summarizes complex concepts or mechanisms more easily than other techniques
	has problems can be hard for users to interact with or interpret not usable by blind people it can be expensive to program diagram drawing software
	should have a label if its meaning is not obvious, using a caption or pop-up label that appears when the user moves the mouse over it