The last item in a Dateval is a boolean that indicates a “slash” formatted Julian date. From the wiki “And typing a slash after the year followed by a value 1 year later creates a Julian dual dated entry.” From the code;
“Slash date is given as year1/year2, where year1 is Julian year, and year2=year1+1 the Gregorian year.
If slash is True, then the date is in the form of 1530/1”
I’m not personally familiar with this type of dating, so I an not too clear on how this is used.
Paul C.