Select Callers - Use the Select Callers option to select all of the function's callers.

Select Callees - This menu option selects all of the function's callees in the hierarchy.

Select Caller Tree - The Select Caller Tree option selects more than just the caller functions, it selects every function and its parents all the way back to the originating function.

Select Callee Tree - Similar to Select Caller Tree, this selects all of the functions the selected function called and all the called functions’ children, as well.

Select Callers and Callees - This option selects every function that the selected function was called by, as well as every function the selected function called.

Select Caller Tree and Callee Tree - The Select Caller Tree and Callee Tree, option selects every function in the hierarchy that exists on the same call chain, from the originating function to all of the descendants of its called functions.