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    Its quite easy to draw a diagram based on a precedance table given, but does it matter if the arcs in your diagram cross. Ive looked in marked schemes for past papers for this question and the diagrams have no arcs crossing one another. I have to draw it a couple of times so that the arcs in the right place, so that none are crossing one another, which can look abit of a mess!
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    Well normally you draw yourself a basic model to start with, then just try and sort out which nodes go where, and if it would be easier to use dummy nodes.
    Then draw it out again, thats what i had to do for my coursework
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    I've always been told that you cannot have arcs crossing...maybe you will be marked down for it.
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    looks like I will have to draw it a couple of times then if you get marked down for crossing arcs
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    (Original post by dnbhead)
    looks like I will have to draw it a couple of times then if you get marked down for crossing arcs
    I always sketch it lightly in pencil at the side of the paper and then once I've got it sorted there I copy it out properly
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    it says in the book that it doesnt really matter, but id say if you keep it neat, then the examiner will find it easier to see what your trying to do, if you make a mistake.
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    It looks neater if the arcs don't cross.
    If the arcs do cross, it makes no difference whatsoever; Precedence tables simply show chains of events.
    I tend to advise students to draw a very quick rough sketch, and then re-draw neatly.
 
 
 
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