Some genealogy programs use top-level custom records that are specific to their program. They may export these to a GEDCOM file that you import to Behold. Any such records are displayed in the Custom Record Details section. Each type of custom record has their own section and records within the section are numbered sequentially.
The above example is from a GEDCOM produced by the program GenoPro which adds additional information in many different types of custom records.
References to a custom record looks like this, with the hyperlink on the record ID if the record does not have a title:
or like this with the hyperlink on the title if the record has a title:
Custom Record Section Title
The title of the section is based on the record type used in the genealogy data. In this case the GEDCOM file had a record type of "_LOC", where the leading underscore is the GEDCOM convention for allowing custom tags.
References to each person, event or fact that links to the custom record are given. They include the event/fact, date, place (as a hyperlink to the place), name of the person (as a hyperlink to the person) and the number of the person.