Importable DOT Commands

OmniGraffle can import documents using a subset of the GraphViz DOT file format.
Command Entity Types
URL (not on graphs) edge/line, node/shape
arrowhead edge/line
arrowtail edge/line
color edge/line, node/shape
dir edge/line
fillcolor node/shape
fixedsize node/shape
fontcolor edge/line, node/shape
fontname edge/line, node/shape
fontsize edge/line, node/shape
headlabel edge/line
label edge/line, node/shape
labelfontcolor edge/line
labelfontname edge/line
labelfontsize edge/line
orientation node/shape
rank node/shape
rankdir graph/page
shape node/shape
style edge/line, node/shape
taillabel edge/line
width node/shape
All arrow head types are supported, but a few do not correspond exactly to OmniGraffle arrow types. The inv, invdot, invodot, and invempty arrow types are replaced with the closest available OmniGraffle line ending.
The only supported shape types are box, circle, doublecircle, diamond, and rectangle. All other GraphViz shapes become rectangles in OmniGraffle.