Call stacks are a natural way to inspect the ancestors along the path down the dynamic call tree to the current function call. To fully navigate the dynamic call tree, developers also need to be able to inspect the callees of the current function call. Pernosco provides a "callees" view to facilitate this. As for call stacks, it accounts for inline functions and tail calls. It also renders the parameters and results of each callee where debuginfo allows.
The callees view is especially useful when a function contains many callees on the same line, or implicit callees such as constructors, destructors and overloaded operators which are not apparent in the source.
Together, the call stack and the callees view provide efficient navigation of the dynamic call tree, a great way to explore program execution.