Special editor for Jython scripts, adding undo and redo actions, bigger/smaller keystrokes and the action "plot." A property "font" is managed as well, which was introduced when the jython mode in the jsyntaxpane editor was using a poor choice.
copy the file into a string using readLine and a StringBuilder.
Ed and I verified that this is being set off of the event thread.
show the script used to create the GUI panel.