Stack Commands

Stack Commands influence the entries in the calculator stack and their position. These commands are for manipulating stack contents only, such as copy/paste, delete, or rearrange. The names for these commands match standard stack manipulation conventions. Many are self explanatory, and some can be used in pairs.

The commands shown below are available if the Show Stack option is selected.

Push

Reloads the quantity in the top register onto the top of the stack, creating a new register. The contents of the top two registers are identical.

Pop

Deletes the top register from the stack.

RlUp

Rolls the top register to the bottom of the stack, moving the other registers up the stack.

RlDn

Rolls the bottom register to the top of the stack, moving the other registers down the stack.

Exch

Exchanges the top two registers in the stack.

Clear

Clears the contents of the stack.

Undo

Use this command to undo the effect of the last operation you performed on the contents of the top register. Successive Undo commands act on any previous operations.

Note: You cannot undo a simple operation such as loading a field quantity, constant, function, or geometry into the calculator. Instead, use the Pop or Clear commands to delete these items from the calculator stack.

Algebraic Options

If the Show Algebraic option is selected, only the following commands are available:

The Clear button has the same function as the Show Stack\Clear Command.

When a named expression is added to a stack, it only shows its name. The Expand button expands the contents of any named expressions added to the stack.