Well I can't say for Windows but in Linux APL is one of the keyboard layouts standard in basically any install. In KDE you can just go in and enable it, in gnom

Well I can't say for Windows but in Linux APL is one of the keyboard layouts standard in basically any install. In KDE you can just go in and enable it, in gnome/xfce/cinnamon you have to tell the system to actually show you all the layouts gsettings set org.gnome.libgnomekbd.desktop load-extra-items true in a terminal will make it show up, then you just set it to toggle with some button. https://www.dyalog.com/apl-font-keyboard.htm https://www.dyalog.com/apl-font-keyboard.htm