That cornfused me too Ward, I was expecting a start and stop X&Y and possibly Z but to answer your question no it did not ask for a start.
I kinda assumed it assumed work 0 as the start, but it appears not. Now there is a formula for disaster
I did try several dimensions both incremental and absolute from work 0 (back left) but was getting errors on incremental and wrong positioning on absolute.
I will try again tomorrow and see what happens after I rethink what you have offered and what I have found.
Thanks
Ken