This is jsplot, a mixture of a technical plotting program and a simple drawing tool.
The exact terms under which you may use and (re)distribute this program are detailed in the GNU General Public License, in the file COPYING.
The web page for this program is:
http://ourworld.compuserve.com/homepages/jsieberer. Bug-reports, suggestions,
questions should be sent to jsieberer@compuserve.com.