Where to get libreoffice calc --infilter values from?

https://wiki.openoffice.org/wiki/Documentation/DevGuide/Spreadsheets/Filter_Options
This document describes “Filter Options for the CSV Filter”:

Field Separator (1)
Text Delimiter (2)
Character Set (3)
Number of First Line (4)
Cell Format Codes for the four Columns (5)

The question is: how could I make the same list for “MS Excel 97” filter? Where do I get data from?
This XML doesn’t seem to have any useful information: http://opengrok.libreoffice.org/xref/core/filter/source/config/fragments/types/calc_MS_Excel_97.xcu