No. But you can download the help file. All features are described with animated gif image. The link is in post #1. In the post #18 the link points to the same help file.
The links in post #1 and #18 are fixed and now you can use them to download the help file. Shawn, in the next days I will check the snap problem. About your second request - did you want the script to create plane primitive or you want to start creating vertices in Step Build mode? Also, how many polygons the plane must…