By Matthew A. Quick An alteration of any part of a Will, which does not constitute a revocation, has no effect on the Will unless the person who executed the original Will (known as the “Testator” if male or “Testatrix” if female), or someone in the presence and at the direction of the Testator or Testatrix, re-executes the Will, abiding by all formalities. 755 ILCS 5/4-9.