The recorder made every unqualified reference relative to the example input, whatever sheet the
step ran on. For example, starting a recording on Sheet1 with B2:C5 selected, activating Sheet2
and setting C4 recorded Input.cell(3,2), so playback wrote Sheet1 instead; a formula entered on
Sheet2 was changed to refer to Sheet1's cells. Each step now keeps the sheet it ran on, and only
references on the input's sheet become tokens.