Stack[] shows the current evaluation stack, giving a list of the tags associated with evaluations that are currently being done. Stack[pattern] gives a list of expressions ...

Throughout any computation, Mathematica maintains an evaluation stack containing the expressions it is currently evaluating. You can use the function Stack to look at the ...

StackBegin[expr] evaluates expr, starting a fresh evaluation stack.

StackInhibit[expr] evaluates expr without modifying the evaluation stack.

StackComplete[expr] evaluates expr with intermediate expressions in evaluation chains included on the stack.

Stack Windows arranges windows in a uniform overlapping stack on the screen (Windows and Macintosh only).

"StackWindows" is a front end token that arranges windows in a uniform overlapping stack on the screen.

DirectoryStack[] gives the directory stack that represents the sequence of current directories used.

FrontEndStackSize is a global option that specifies the size of the stack used to store data in the front end (Macintosh only).

Show Stack Window toggles the display of the evaluation stack window on or off.