Translation of Gymnastik

Everyone says, that I am sending always silly pictures, so here 4 more images. Your picture is very cool, especially the hat, it has a really cool shape. Are there different sizes?
Maybe we would need to say install our dictionary as a software? But I would say instead of install, use our dictionary as a software. So bottom line. If I use the singular form for newsletters and websites, I am on the safe side for both?
Yes, come to Switzerland. May I ask if you have friends here? Pity that Geneva is so far away from Zurich, about 3 hours by train. If you have the time you need to visit me. We have a great lake.