And if you use PharoJS, which transpiles to JS, the same software will run in any web browser, and on mobile devices (using Apache Cordova).
For example, dialogs. Choose a file, right? I mean how hard can it be to select a picture and view it on screen. Well, Android is non-blocking while Windows can be modal blocking. So in Windows it's easy to show a file dialog to select a file then your code goes to put it on screen. Well, good luck doing that in Android. There you have to split your code in several routines that chain each other in order to achieve same effect. Which leads to different code either split by files or surrounded by compiler switches. Boom!! Not what I want!! I know how to do that in dozens of so called cross-platform programming languages. What I want is one call "ShowDialog" implemented at programming language level, not 3rd party, not my code splitted by compiler switches, that behaves the same in all targets. That, my friend, is what I meant by zero programming languages doing this currently.