The file after extracting can be opened with as Spreadsheet Reader (e. g. Excel).
The sheets * - Felder include the codes and description (columns B and C), as well as allowed values, regex expression and length every field validates against (columns E, F and I). This also applies to attachments to the main form.
Rows marked as(alt) and GEAENDERT_ALTE_VERSION denote, that a change has been made to its parameters (eg. context or value) compared to the previous version of the documentation.
Forms
The forms have a 7-digit ELSTER field code number printed on it (blue).