Couldn't get it to work on OSX (El Capitan) even after installing ActiveState Tcl/Tk. After removing that package following these instructions http://superuser.

Couldn't get it to work on OSX (El Capitan) even after installing ActiveState Tcl/Tk. After removing that package following these instructions http://superuser.com/questions/36567/how-do-i-uninstall-any-apple-pkg-package-file http://superuser.com/questions/36567/how-do-i-uninstall-any-... I installed MacPorts from https://www.macports.org/ https://www.macports.org/ sudo port install tk cd ~/Downloads/drakon_editor1.27 tclsh8.6 drakon_editor.tcl And it works!!! Interesting idea for making the structure visible and presumably, helping find corner cases that are not handled. You could presumably build a library using Drakon, and then build an app using the library so that the detail of the code in the library is hidden behind simple function calls. This reminds me of the proliferation of graphical workflow systems such as BPMN and this nifty Data Mining app called Orange3 http://orange.biolab.si/orange3/ http://orange.biolab.si/orange3/ I think we may finally be figuring out how to apply a visual paradigm to coding in a way that works for real production apps.