XY-pic tutorial with an archive of examples

Introduction introduction and required header files. arrows curves nested diagrams shrinking and enlarging diagrams adding labels to diagrams
	Braids and Knots braid Tutorial examples of knots Markov moves archive and embedding eps files in xypic diagrams
Cobordisms Cobordism tutorial with many example
	String diagrams String diagram tutorial with many examples
Diagrams from category theory commutative diagrams globular 2-cells globular 3-cells
	Diagrams from topology algebraic topology and Morse theory
Miscellaneous diagrams some strange diagrams