The interactive stack mode is entered by pressing UP while on the stack. A cursor on the left of the stack indicates the stack is in interactive mode. Pressing ON will exit interactive mode.

While in the interactive stack, you can operate on a single item -by simply moving the cursor to that item- or on multiple items by selecting them first, then operating. To select multiple items, move the cursor to the item in question, then press SPC. The item will be highlighted on the screen. Moving the cursor to other items will extend the selection, and pressing SPC again will fix the selection, so the cursor is free to move. The selection is also cleared by another tap of SPC.

The most common stack operations are performed with the cursors LF and RT. When there's no selection, LF will move the item at the cursor to Level 1, while RT will move Level 1 to the position pointed by the cursor. Other items will simply be moved, effectively causing ROLL and ROLLD with the items between Level 1 and the cursor. When there's a selection, and only if the cursor is within the selected range, LF and RT will do the same but only with the selected range, effectively rotating the selected items. When there's a selection but the cursor is pointing outside the selected range, LF will move the selected items to the cursor position, while RT will make a copy of the selected items at the cursor position, preserving the original selected range.