Categories:
* "General" : general file information (size, timestamps, user, ..)
* "Summary": Content information (rows, columns, variables, atrributes, ..)
* "Content": Metadata in DDL/BNF format, etc.
Ideas:
* Use the filter to get summary and content information
* highlighting in BNF view
Links:
* https://support.hdfgroup.org/HDF5/doc/ddl.html
* https://de.wikipedia.org/wiki/Backus-Naur-Form