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Rule 1: Prepare Small Diagrams
The big diagrams that contain various elements fail to convey the amount of information, in compare to small and focused diagram.
While reading the large diagram, the audience losses their focus and they would not know what exactly they have to concentrate on. This is because, there are more number of elements presents and it becomes difficult to pay attention on everything at time. If you show up a bigger and complex diagram to your stakeholders, they will quickly lose interest in understandingeverything. Therefore, prepare a small diagrams and thumb Rule to prepare a good diagram is it should be printable in A4 size sheet in easy readable font.
Rule 2: There Should Not Be Any Crossings
This is a very common rule, but many of us miss it while preparing a diagram. We should avoid two lines in diagram and that crosses each other. When there is no crossing in diagram, it becomes interesting and more understandable. If you have no crossing in diagram you are presenting, it will be more understandable and convey to things about you and your design
a) There will not be too much stuff on diagram. If there are more aspects you have to show, its better you prepare two different diagrams.
b) Crossing of lines means, there is some designing flaw in model you are presenting.
Rule 3: Orthogonality
If you want to prepare a clear diagram, you need to follow one format. Your diagram should go either horizontal or vertical. This will give a better look to your diagram.
Rule 4: Keep The Parents Up
When you are showing hierarchy in a diagram, always make sure that the parent element are on the top side then the child element. The arrow should always remain in the upward direction. In this situation, you have numerous to elements present in all descending form, then you can show the hierarchy in vertical tree format.
Rule 5: Clean
If you want to convey your stakeholders that the diagram you have prepared will help them in resolving their issues and it is well thought and planned, keep your diagram clean and nice.
While tidying up the diagram
When aligning elements, align it by one of their sides it could be top or sides or at the centers.
Make sure all elements present in diagram are of the same size.
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