What is the significance of substituting arts. 81 and 82 with "Subs. by s. 4, ibid. for arts. 81 and 82 (w.e.f. 1-11-1956)"?
The significance of substituting arts. 81 and 82 with "Subs. by s. 4, ibid. for arts. 81 and 82 (w.e.f. 1-11-1956)" is that it implies that the original articles 81 and 82 were replaced or substituted by a new amendment made through section 4 of the same legislation, which took effect from November 1, 1956 (w.e.f. 1-11-1956). The specific changes in content or meaning brought about by this substitution cannot be determined without examining the original articles 81 and 82 and the new amendment made through section 4 of that legislation.