Flow chart software fro charting code

I have just written a large FORTRAN 90 program and would like to know if there is FlowChart software so I can chart the code to ensure my logic is correct. I checked out MindMap but it was very expensive - $300! Is there anything cheaper?

Thanks

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Omnigraffle

Is quite good and much cheaper I think.

Ben

Look at "Understand" by

Look at "Understand" by Scientific Toolworks ("SCItools.Com").

D. Ray