UTN #2: A General Method for Rendering Combining Marks http://www.unicode.org/notes/tn2/ or "cap-height" as a basic unit of measurement. Each glyph in a font has a bounding rectangle -- the smallest rectangle that completely encloses the outline of the glyph. Each gly...
Mitchell Software Engineering -- Free Stuff http://www.mitchellsoftwareengineering.com/freestuff.htm on UML that covers very basic elements of class and interaction diagrams. An Introduction to Design Patterns is a presentation on design patterns that covers some elementary conce...