\tikzset{uml box/.style={draw, minimum height=.7cm, text badly centered},
uml small box/.style={draw, text width=.7cm, minimum height=.5cm, text badly centered},
uml class/.style={rectangle split, rectangle split parts=2, draw, minimum width=0, font=\sffamily},
uml directed/.style={thick, -angle 90},
uml aggregation head/.style={shape=diamond, aspect=.5, anchor=north, thick, draw},
uml composition head/.style={shape=diamond, aspect=.5, anchor=north, thick, filldraw},
uml generalization head/.style={shape=isosceles triangle, isosceles triangle apex angle=60, shape border rotate=90, scale=.8, draw, thick, anchor=apex},
uml cardinality start/.style={very near start, auto, font=\sffamily},
uml cardinality end/.style={very near end, auto, font=\sffamily},
uml role start/.style={very near start, auto, font=\footnotesize\sffamily},
uml role end/.style={near end, auto, font=\footnotesize\sffamily},
uml association name/.style={midway, auto, font=\footnotesize\sffamily},
}
