sandermarechal/jejik-mt940 — pull request #2 by NanneHuiges (2012-03-28 07:49:37+00:00)
Title: According to documentation balance can also be " :62M: ".

Start and end balance was only identified by ":60F:" and ":62F:".
According to http://nl.wikipedia.org/wiki/MT940 (bad source, I know),
but also http://www.abnamro.nl/nl/images/Generiek/PDFs/020_Zakelijk/03_OfficeNet/Formatenboek_MT94_(nederlands).pdf
(dutch only, sorry), you can also expect ":60M:" and ":62M:".
From that pdf:

60m	Tag 60m Opening balance	:60m: m = F or M
62m	Tag 62m (booked funds)	:62m: m = F or M