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### 15.2 Yanking into the Stack

The `C-y` command yanks the most recently killed text back into the Calculator. It pushes this value onto the top of the stack regardless of the cursor position. In general it re-parses the killed text as a number or formula (or a list of these separated by commas or newlines). However if the thing being yanked is something that was just killed from the Calculator itself, its full internal structure is yanked. For example, if you have set the floating-point display mode to show only four significant digits, then killing and re-yanking 3.14159 (which displays as 3.142) will yank the full 3.14159, even though yanking it into any other buffer would yank the number in its displayed form, 3.142. (Since the default display modes show all objects to their full precision, this feature normally makes no difference.)