Found the first and second article.
In Creo you can definately sketch up a 2D mechanism. You can also drag some points around and see what happens. What you will probably be missing is a point trace feature where a point's movement is drawn on the canvas. That is possible using the Mechanisms module I think (somebody please confirm), but then you are out of the sketcher. If you want to modify parameters there you will need to change dimensions of parts, or go back into sketcher to make modifications. Then rerun the motion analysis to get the points trace.
