El Matador, Thank you for your kind words,I'm glad you enjoyed the lines and boxes.For me it made thing better when teaching new students as I didn't have to stand there and say" AGAIN" over & over the student now had a reference to see his foot position. G.M.Ark Y.Wong said you should always end your set at where you started exactly,if not Again .
Yes I recall the different exhales sounds ,some were longer and a little louder.
Good luck in your search,best to your family.

Keep in touch,
Sifu Jim