NAVIGON 2510 20 - - are there hidden functions

[TheRobert]

NAVIGON 2510 20 - - Are there interesting functions whic are 'hidden' for normal users? Or any 'easter eggs' like seen in older WINDOWS Versions?

Details of the NAVIGON device I have:

NAVIGON 2510 20
Version: 7.6.4 (build-1183)
Program: 100628-1921
NAVIGON AG
Copyright (c) 2010

Best regards.
TheRobert