The classicladder is a separate project, which can be obtained from its
website.

It is a graphical stepladder and GRAFCET editor.

CLASSIC LADDER PROJECT
Copyright (C) 2001 Marc Le Douarain
mavati@club-internet.fr
http://www.sourceforge.net/projects/classicladder
http://www.multimania.com/mavati/classicladder
February 2001

Any enhancements, bug reports, bug fixes and so on (including those
relating to the MatPLC integration) should be submitted to Marc.