On May 30, 10:41 am, Greg Esres wrote:
That line is the target point for the middle of the grout line for
the next course that is aligned with the first to keep you running
straight ahead instead of letting the pattern shift as you proceed.

Ok, glimmer of understanding; hopefully, the book that RicodJour
recommended will have a picture. I have horrible images of my course
hitting the far wall canted at some extreme angle. ;-)

I'll wait until I read to the books before asking any more questions.

Just try laying out some dry w/ just a chalkline that you can erase if
you don't like it -- could even lay some kraft paper down if don't
want to confuse the issue for a trial to snap the line(s) on...if you
do that and experiment a little, I think it will become clear on its
own...you don't even need to worry about the end pieces nor all the
way across, just proceed a few feet forward and a couple of feet
wide. It will be enough to allow you to then visualize the appearance
and you can tell by looking from a distance if you're keeping the
courses straight and even. And, the good thing is, if you don't like
it that time, pick 'em up and try again...