That said, nobody can guarantee that the substance of the agreement would be a good outcome for the UK, in terms of comparability with the current position, in which the UK enjoys access to the single market, and participates in key decisions about trade, the environment, and international peace and security. (blog.politics.ox.ac.uk)
Paragraphs 6 - 32 detail the substance of the agreement on «Citizens» rights»; paragraphs 33 - 36 detail the «Legal effect of the citizens» rights Part»; and paragraphs 37 - 41 delineates the agreement on the «Consistent interpretation of the citizens» rights Part». (europeanlawblog.eu)
Apart from the influence that the legislation has had on the substance of agreements, it has also resulted in a move away from technical legal jargon, in favour of simpler and more accessible language. (lawyer-monthly.com)