I've recently dipped my toe into APL, and I tend to agree. APL only really advances from lines of ASCII text to lines of Unicode text. It's still very line-or

I've recently dipped my toe into APL, and I tend to agree. APL only really advances from lines of ASCII text to lines of Unicode text. It's still very line-oriented. If Unicode expands toward Tex/LaTeX/&c it could look a lot more like written math. Subscripts are nice, but there's more to it. Unicode entry is so poorly supported on macOS & Windows it's really not funny. Emacs (C-x 8 ENTER) is my best bet, or Xah Lee's website &c. If one were to design a new APL, one would be tempted to just use the few characters Apple lets you type with an Option or Command key. (and of course I can't easily type those symbols so I refer to them by six letters each—that's likely not going to change) All APL needs though (EDIT: and really I mean any language, as long as we have common sequences), is leader key sequences. Rho is `r. To me, it always will be. The interface [1] has this down pat. We should be able to type anything in Unicode with just a few of the 104 keys. Like how T9 allows 12 buttons to type 26, &c. The world is never going to build a 12,000-key Unicode keyboard. We're going to have to use leader sequences. Just my (beginner's) opinion. [1] even tryapl.org/ !