An out of date manual can be found here.
Warning: This manual describes the old (pre-OpenGL) version of KnotPlot! The control panel is different, but most of the commands are the same. Although this manual not up to date, and in some ways even misleading, it is still useful for information that it has about what's in the KnotPlot distribution, how the knot catalogue is organized, and a hyperlinked description of KnotPlot commands and parameters.

A nearly up to date PDF version of the manual is available at the KnotPlot download site. It is, however, not quite as fancy as the HTML version of the manual.

Rob Scharein
25 October 2002