Correction of Mistakes and Omissions; Use of Extrinsic

Evidence to Arrive at Testamentary Intent. When there is an imperfect description in a will, or no person or property exactly answers the description in a will, mistakes and omissions must be corrected, if such error appears from the context of the will or from extrinsic evidence. When an uncertainty arises upon the face of a will, as to the application of any of its provisions, the testator's intention is to be ascertained from the words of the will or from extrinsic evidence, taking into view the circumstances under which the will was made. AExtrinsic evidence,@ as used in this Section, may include the oral declarations of the testator as to his testamentary intent, but such oral declarations may be considered only when no other evidence is available apart from the words of the will.