For example, I have two documents A and B. The document A has many sub sections X1,X2. I want to include a link in document B such that it points to section X1 in document A. Please note that the title of the X1 section might be changed and that I do not want to document B to repeatedly change the link in order to avoid link breakage. I know that using tiny URL helps while pointing to a document as a whole. Is there any such thing while linking to sections within documents?