I don't (yet) have a copy of Elizabeth Shown Mills' 'Evidence Explained'. It now seems to be an almost essential purchase if you are to use RM4 source templates correctly? In the meantime I'd like to enter a few new key sources that I have just obtained (you know, the once a year certificates that come through and finally unlock a long genealogical mystery

England & Wales (certified copy of an entry of) B/M/D certificates obtained from the GRO London? (You know, the ones that cost you 7 quid!). There seem to be lots of choices for marriages and deaths especially in RM4+EE.
I'm sure there are a few others which will become apparent in the near future, but these will really help me now.
Like many others it seems, I'll wait until the dust settles (and conversion tools are written?) before I tackle long standing 'core' sources such E&W census.
Thanks,
Barry