What does it mean when a section is "substituted" in the context of constitutional law?
In the context of constitutional law, when a section is "substituted," it means that the original text or provisions of that section have been replaced by new ones. This can occur through various amendments to the constitution, often made by legislative acts, which alter or add to the existing legal framework. The substitution usually takes effect from a specified date, as mentioned in the context provided (e.g., w.e.f. 18-6-1951 or w.e.f. 3-1-1977).