48. 49. Will may be revoked or altered. Form of will. PART VIII—EXECUTION OF UNPRIVILEGED WILLS. 50. 51. Execution of unprivileged wills. Incorporation of papers by reference. PART IX—PRIVILEGED WILLS. 52. 53. Privileged wills. Mode of making privileged wills. PART X—ATTESTATION, REVOCATION, ALTERATION AND REVIVAL OF WILLS. 54. 55. 56. 57. 58. 59. 60. Effect of gift to attesting witnesses. Witness not disqualified by interest or by being executor. Revocation of will by testator’s marriage. Revocation of unprivileged will or codicil. Effect of alteration in unprivileged will. Revocation of privileged will or codicil. Revival of unprivileged will. PART XI—CONSTRUCTION OF WILLS. 61. 62. 63. 64. 65. 66. 67. 68. 69. 70. 71. 72. 73. Wording of will. Inquiries to determine questions as to object or subject of will. Misnomer or misdescription of object. When words may be supplied. Rejection of erroneous particulars in description of subject. When part of description may not be rejected as erroneous. Extrinsic evidence admissible in case of latent ambiguity. Extrinsic evidence inadmissible in cases of patent ambiguity or deficiency. Meaning of clause to be collected from entire will. When words may be understood in restricted sense, and when in sense wider than usual. Which of two possible constructions preferred. No part rejected if reasonable construction possible. Interpretation of words repeated in different parts of will.