A thousand thanks. I was also very happy for the tip. :-)

Even on vacation, you think of the 'mission'.

"Alles für den Dackel, alles für den Klub!" (Everything for the dachshund, everything for the club!), as we say here. :-D
It really was just daily hiking trips in areas that I can easily reach by car. But almost every day.
Fresh air and hiking actually fits very well for me to develop a software. Brain works very efficiently under such Kind influences. Only enough time for implementing all the results of the thinking was a bit rare.