Section 99 of Evidence Act "Who may give evidence of agreement varying terms of document"
Persons who are not parties to a document, or their representatives in interest, may give evidence of any facts tending to show a contemporaneous agreement varying the terms of the document.
A and B make a contract in writing that B shall sell A certain cotton, to be paid for on delivery. At the same time they make an oral agreement that three months credit shall be given to A. This could not be shown as between A and B, but it might be shown by C, if it affected his interests.
Section 100 of Evidence Act "Saving of provisions of Indian Succession Act, relating to wills"
Nothing in this Chapter contained shall be taken to affect any of the provisions of the Indian Succession Act77 (10 of 1865) as to the construction of wills.
What is Evidence as to document unmeaning in reference to existing facts What is Evidence as to application of language which can apply to one only of several persons Section 95 and 96 of Indian Evidence Act 1872
What is Evidence as to application of language to one of two sets of facts, to neither of which the whole correctly applies Evidence as to meaning of illegible characters, etc Section 97 and 98 of Indian Evidence Act 1872
What is Burden of proving death of person known to have been alive within thirty years Burden of proving that person is alive who has not been heard of for seven years Section 107 and 108 of Indian Evidence Act 1872