Hi Robert,
Architectural convention for drawings is that north points to the top of the page. If the drawing reads better in another direction that is of course used. As a design oriented architect and not a technical person I assumed that North would be pointing up (top of the y axis). After discussing this with a surveyor I work with he explained the difference and that U.S. surveys do use bearings and not azimuth angles. It would be very helpful to have a note with the PL instructions in the User's Guide. I eventually discovered the diagram in Appendix C but found it very confusing.