Related Clues:

• Proof overrides
• Lets stand
• Decides not to dele
• Signs of omission
• Puts back in
• Marks that look like inverted v's
• Leaves as is
• ''Let it stand'' orders
• Undoes deles
• Leaves alone after all
• Retaining instructions
• ''Keep it in'' notations
• Allows to remain
• Addition symbols?
• Deles' undoers