For the PowerAda debugger, a listing of the routines that are in the call chain above the code you are debugging. For example, if you set a breakpoint within an Ada procedure and request a call traceback, you see a list of all the procedures that called your Ada procedure, in the order in which they called it. All the calling procedures in the call chain are listed up to, but not including, the operating system calling the original highest level routine.

a record of the sequence of function calls that are active at a particular point in the program.

The second stage of a dynamic programming alignment, in which the alignment is found by following the pointers back from the highest scoring position in the score matrix.