How to make a flowchart? [closed]

I'd like to make a flow chart in similar to this:

I think it's more of a layout and stylistic question for a graph - how to style a graph with labeled edges and vertices so that it looks like a chart?

Examples:

closed as too broad by Kuba♦, MarcoB, Michael E2, Jens, m_goldbergFeb 10 '16 at 2:36

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• It's entirely possible with enough VertexShapeFunction and EdgeShapeFunction settings, but it's also a lot of work and very tedious. Why don't you use a dedicated diagramming tool? You could do it in a tenth of the time. No, probably a hundredth of the time. – Szabolcs Feb 9 '16 at 19:59
• Although Mathematica's graphics functions should be able to draw all this, and the graph drawing routines have quite some flexibility, I don't think Mathematica is a good tool for this. There are several (even free) programs that would be a better choice. – Sjoerd C. de Vries Feb 9 '16 at 19:59
• If you just want a static figure, you can define graphs, rectangles, text, arrows and such. But if you're a serious Mathematica user, you want your figures to compute. For this, see QueueingNetworkProcess. – David G. Stork Feb 9 '16 at 20:00
• So, do you have an example you want to style in such way. And if so, where have you failed? – Kuba Feb 9 '16 at 20:59
• I would love to have graph gui functionality... And with the addition of all the mesh capabilities, I think that we are currently missing both 2d and 3d input on a Graphics space... – P. Fonseca Feb 9 '16 at 21:13