this kind of thing:

1 INTRO

1.1 paragraph one

1.2 paragraph two

2 NEXT SECTION

is this something which can be applied to a document that is already written? I think it can, only problem being how does the document know where "NEXT SECTION" begins, as if i highlight a whole document, it will mark the paragraphs, but just all as 1.6, 1.7, etc...

OR

am i better off just going through the document and typing in 1.2, etc...