I would like to discover what custom tags are created for a WikiTree GEDCOM export.
There seem to be some irregularities -- particularly the very critical tags under the NAME section. The _MIDN field implementation is very problematic for most programs. (It would make MUCH more sense if the standard GIVN name field had a fully collated name. Then the _MIDN the _PGVN fields could be used as a disambiguating parsing hints. However, a couple more hint fields might be needed to fully disambiguate the NAME data. Or maybe a dynamic parsing pattern in custom crosswalk field would be more flexible and require fewer fields?)
It would be simplify making the Gramps software recognize those custom tags if we could find a full list. (And to understand what data is EXPECTED in those fields. For instance, the "_PGVN" name field is variously listed as containing a "Preferred Name" {aka "Call name"} or a nickname. But those 2 pieces of data are in different fields Edit Profile form.)
Note:
An online search indicated that the source code for the module was once indexed at the following location (but cannot be found there now):
https://github.com/wikitree/wikitree
src/GedcomExport.php