Purpose: define the steps for one to take to create their first starpack.
You can even use your own application for the initial time through; "starkitting" is straightforward enough that people have been successful doing it for the first time even with applications which involve several auxiliary files, extensions (but only stubsified ones?), and so on.
How should your application look so that it makes a good starpack? "Starting effective starkit-based pure-Tcl development: the starkit::* namespace" addresses that question.