http://hiddenhn6rh56qsoxft4vjus5jp5zycrw55n63skh7kqentg3rx6rpqd.onion/wiki/Special:Version/License/Vector
Of course, the commands you use may
be called something other than `show w' and `show c'; they could even be
mouse-clicks or menu items--whatever suits your program.
You should also get your employer (if you work as a programmer) or your
school, if any, to sign a "copyright disclaimer" for the program, if
necessary.