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You can view software metric information in the Graph window, so that you're able to see the metric information within the context of the software's structure. In Structure mode, you can select a metric to use for symbol coloring. This causes all symbols in the graph to be colored, according to where their value for that metric lies with respect to the thresholds you have set.
Here, in the Graph window, you're able to see the cyclomatic complexity of the functions within the context of the software's structure. The functions colored blue are library functions, which have a declaration but no definition, and consequently have no value for cyclomatic complexity. While highly complex (red) functions may cause understanding and maintenance problems on their own, areas of code where highly complex functions are calling each other merit special attention.
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