In the current release (0.1.0), folding (hiding detail text) is based on the line level. In GEDCOM files, logical records begin at line level 0. Subordinate lines with levels 1 or higher contribute to the logical record which was defined by the level 0 line that preceded it. So, folding allows a user to see only level 0 lines (logical record starts) or level 0 lines plus selected additional levels, giving the user some control over the amount of detail displayed.
The plugin has been tested with a variety of GEDCOM files (*.ged), including UTF-8, UTF-16, ANSI, and ASCII. In release 0.1.0, the ANSEL character set is not supported.