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Many thanks, Robert! I appreciate this, and you encourage me to look beyond my sense of "everything's different!" -- this looks like less of a learning curve than I feared.
I'd like a way to pull out common factors from lists, basically a way to reverse the automatic mapping of multiplication across a list.  If you type a{x,y,z} Mathematica performs the scalar multiplication immediately: [mcode]{a...
And, let's add right away, when will we have a CDF player for Android?