This is the presentation "Practical QML" that I gave at the Qt Developer Days 2013 in Berlin and San Francisco. What topics entail the liveliest discussions when you talk to the makers of in-vehicle infotainment systems, agricultural driver terminals or set-top boxes about building QML GUIs? No, it is not about "fluid" multi-touch UIs with graphical "wow" effects, but about mundane things like key navigation, theming, and internationalisation. I'll address these three problems in my talk. First, I’ll discuss how to navigate QML GUIs solely with a rotary knob. By turning or pushing the knob, a "cursor" is moved from one QML component or one screen to another. Then, I'll show how to switch between different languages and between different themes at run-time.