Layout Convention - Do You Have a Preference?
William Duffield
Let’s say I want to arrange 4 sticks, for example for table legs, or for stiles for a frame and panel chest. After I have arranged them for best presentation, I usually mark the top ends of the posts with a “carpenter’s triangle” using a soft pencil. (I put that term in parentheses, since Google doesn’t understand it, and assumes instead that I am interested in speed squares.) This one simple mark tells me just about everything I need to know about the legs as I continue to join and shape them: up vs. down, inside vs. outside, left vs. right, front vs. back, etc. However, I just realized that it doesn’t tell someone else quite everything they would need to continue with the construction of the table. The illustration doesn’t tell me which face is the front and which is the back, because there are two reasonable orientations for the triangle, point towards the front or flat face towards the front.

Sorry about the shaky triangle. It's supposed to be roughly isosceles, but I’ve had one too many cups of coffee this morning. Broke my lead three times and had to resharpen it. 
Which orientation do you use?
Is there a “standard” convention?
Do you build all your furniture to stand in the middle of the room, to be viewed equally from all four faces?
Note that I’m not interested at this time in the system that Roubo lays out in Plate 5, because it’s way too complicated for most constructions.