## Root Filters

Note the tabs above beginning with “Root”, as in Root IncludeBys or Root Classes. “Root” tabs filter entities to only what is on the top of a given tree. The tops (or bottoms) of relationship trees are often helpful points to being exploration of code new or unknown to you.

- Root IncludeBys - list only files that are included by others, but do not include any files themselves. These are “lower” level include files.
- Root Classes - list only classes that do not derive from other classes. These are candidates for lower level classes, or library classes.
- Root Calls - lists only functions that call others, but are not called themselves. These functions are your main routes (e.g. main() ), or are interrupt handlers (called by hardware), or are dead code (unused in the source analyzed).
- Root CallBys - list only functions that are called by others, but call no other function. These functions will be lower level routines.

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