In the 1970s and 1980s there were various attempts to re-express the charism of SSF. Br Geoffrey's "The Way of St Francis" was a rewriting of the Principles to make them accessbile as a common document to all three orders. Br Michael's "Instruments of Peace" was a more radical restatement of the "present intentions" of the three orders. Br William paraphrased the Principles in more contemporary language, and Brother Brian in plain English, having in mind brothers for whom English was not their first language.
There is a temporary glitch with those creating user accounts from Google hosted email addresses (including franciscans.org.uk and franciscan.org.au). Google blocks the email to complete the registration process. Please email me and I can fix it internally.