FAQ

• Does A+ run under Microsoft® Windows®?
• What's the easiest way to install XEmacs?
• Why don't the things work in Emacs?
• How do I use the APL fonts with my German keyboard?
• How can I use the APL fonts on Mac OS X without running X11?
• How do I install A+ under Mac OS X (10.3.1) and setup Xemacs?

• The core A+ interpreter, no GUI or IPC, has been ported to windows through a project sponsored by the British APL Association. This version has been dubbed aflat.

• Look for a binary distribution suitable for your platform. www.xemacs.org.

• The lisp files are designed to operate with XEmacs, not Emacs. They are two different programs. We don't know how to make the A+ XEmacs goodies work with Emacs.

• Here is advice from Edgar M. E. Wermuth for users with German keyboards, possibly applicable to other keyboard setups also.
• Tomas G. of .se kindly sent this recommendation to address the minor bug in the Lisp code:

  This problem can be fixed by putting these lines in ~/.xemacs/custom.el :
  
  (custom-set-faces
   '(default ((t (:size "14pt" :family "Kapl"))) t))
  
                  

• Matthias Neeracher has created a filter in expect and written up steps to use the APL TrueType font in a Terminal window under Mac OS X. It is left as an exercise for the reader to modify the filter, a+wrap, to invoke A+ with arguments if desired. Also change a+wrap if expect is not installed in /sw/bin/expect.
  • Place KAPL.TTF in /Library/Fonts
  • Download a+wrap, put it in your path and make it executable.
  • Open a window in Terminal.app
  • In the Shell pane (CMD-I opens a window with the panes), set the encoding to ASCII
  • In the Text pane, set the font to KAPL
  • In the Emulation pane, turn on Option (alt) key acts as meta key
  • Now run a+wrap. The option key enables the APL characters.
  Cool, isn't it?

• Here is a detailed description from P. de Almeida on setting up A+ and Xemacs on MAC OS X. This document is also available for download as a pdf file.