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LEGEND
DOWNLOAD CoCoA-5 For Intel processors 64bit:
Emacs interface screenshots
  1. Download Emacs (we suggest Aquamacs)
  2. Download CoCoA-5: save the CoCoA-5 folder where you want, but NOT in the Desktop folder because Emacs doesn't seem to see it (no idea why!!)
  3. Configure the Emacs-CoCoA5 communication like this:   (Emacs experts, jump to the bottom)
    1. Open the CoCoA-5.X folder
    2. Open the emacs folder
    3. Double-click on ConfigEmacs.command: it's really quick!! (*)
    4. ALL DONE!! info & screenshots
      5. (*) ... but very likely you get this MacOS-safety Error window:
      "XYZ" cannot be opened because it is from an unidentified developer.
      [macOS error]
      Then, just for the first time after downloading, you need to open the following 2 files with Terminal.app:
      in folder CoCoA-5.X/emacs: ConfigEmacs.command
      in folder CoCoA-5.X/bin: CoCoAInterpreter
      1. Right-click (or Control-click) on the file icon
      2. From the menu choose "Open",   or "Open with Teminal.app" if just Open is not enough
      3. Then you'll get this warning window:
        macOS cannot verify the developer of "XYZ". Are you sure you want to open it?
        [macOS open?]
      4. Now click on the "Open" button. This will open Terminal.app and run the file.
      5. Close Terminal.app
Some MacOS tricks
Emacs experts

The configuration described above, by running ConfigEmacs.command, adds a few lines at the end of your .emacs file (creating it if necessary).

If you don't want this standard configuration (e.g you have already defined your own favourite Emacs options/colours/..) you might prefer to look at the file
CoCoA-5.X/emacs/cocoa.emacs
and pick and copy into your .emacs only the settings you desire.