Thought of each talaq uttered in any sort by any means (other than the 3rd of three) as one and revocable; formalisation of reconciliation and notification methods, and strategies for recovery of mahr and penalties for non-compliance; talaq was typically rendered invalid by failure to inform in 1960s and 1970s, https://stephenplqem.thezenweb.com/the-divorce-diaries-70470587