Title:
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	The Graphical Depiction of Design Patterns

Abstract:
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	If design patterns are to fulfill their promise of dramatically 
improving the quality, timeliness and reusability of software, it is 
essential that techniques be found to document them concisely and 
accurately. Graphical notations offer potentially the most powerful 
approach, but unfortunately the current techniques for pattern 
documentation rely on notations which were initially developed for 
capturing analysis and design information, and are thus unable to 
describe some important aspects of patterns. This paper puts forward a 
notation which is tailored to the description of the implementation-level 
mechanisms from which design patterns are constructed, and is therefore 
much better suited to their documentation. The features of the notation 
are first illustrated through their use in the documentation of the well 
known Observer (or Publisher-Subscriber) pattern, and then applied to 
the description of a new design pattern called Advertisement.


Author contact info:
--------------------

	Carl W. Irving				<-- Contact
	Research Assistant
	University of Houston Clear Lake
	Box 384,
	2700 Bay Area Boulevard,
	Houston, TX 77058

	Phone:	(713) 283 3837
	Fax:	(713) 293 3869
	email:	cwirving@ricis.cl.uh.edu


	Colin Atkinson
	Assistant Professor
	University of Houston Clear Lake
	Box 2,
	2700 Bay Area Boulevard,
	Houston, TX 77058

	Phone:	(713) 283 3878
	Fax:	(713) 293 3869
	email:	atkinson@cl.uh.edu