Notes about the D83 file extension:
Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries, unused processes and other unfavourable system settings to identify slowdown issues.
The D83 file type is primarily associated with 'GAEB' by Bundesamt für Bauwesen und Raumordnung. The GAEB interface serves the electronic exchange of bills of quantities.