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Ign timing; advance vs retard

I wanna make sure I've got this right. Without delving into the myriads
of reasons why (relative angle of crank/con rods; varying values of com-
bustion burn rate depending on instantaneous cylinder pressure; etc, and
so forth) the ignition timing is a variable, one "advances" the timing
by causing it to fire earlier in time, or at a "larger" BTDC value, cor-
rect? I.e., 10 deg BTDC is 'advanced' timing relative to 5 deg BTDC?