The Stack Pane shows the stack of method and block activations currently pending in the process stack. The display is the same as that in a walkback.
By default the depth of the stack trace is limited and so the list does not necessarily include all the stack frames. The depth can be increased with the Debug/Call Stack/More and Debug/Call Stack/All commands. Selecting a frame in the stack trace causes the other panes in the Debugger to be updated with information pertaining to that frame.