Click on any of the UML class diagrams below to see the MetaUML code that generated them.
These UML diagrams are readily usable in LaTeX: see MetaUML FAQ for details. The UML diagrams look even better when included from LaTeX: lop.pdf, lop.tex. You can download the diagrams and their code from here.
Things have improved! Now there's much easier to arrange diagram items (MetaUML 0.2.x). Have a look at the manual, section "Arranging Diagram Items".
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The occasional visual imperfections are caused by the small DPI used to generate the pngs.