Arlene, you put a great big smile on my face, thanks! (me too: researching way back, working toward evergreens, and 'oh no' when i see many "sdlgs").
Your reading helps to reduce the amount of confusion i experience .. since we can take "sdlg" as kind of unknowable (in terms of its impact in a pedigree), i think i will now just concentrate it down generally to known parentage in the lines.
I feel sooo much better ... and the intrigue and surprise will come from any deviation in the plant or its future offspring. Coolioes!