Hi APLer, let me propose another approach - don't fiddle with keyboard layouts anymore to get APL-symbols. I think this is a bite reflex from the past - APL symbols → I need a specific keyboard layout.
Most operating systems offer compose keys, and they are much easier to configure, and independent of keyboard layouts. For example X-Window: just put a proper .XCompose file into your home directory, restart you application and you are done. You don't even need to restart XWindow. MacOS: ~/Library//KeyBindings/DefaultKeyBinding.dict is similar. I chose "." as my compose key, so hitting ".:" results in ≡. ".a" is ⍺, etc. I don't have to think about keyboard layouts. Hitting '.e' is '∊', no matter which layout, Dvorak, Qwerty, etc. For more information and my sample .Xcompose and DefaultKeyBinding.dict see my blog-post at <https://diesenbacher.net/blog/entries/apl-symbols.html> Regards, -- *okflo*