newRPL: DATA TYPES USING [] AS ELEMENT CONTAINER

[The Shadow]

While I would welcome commands to treat lists as sets, and polynomials as vectors in the style of PROOT, I think creating those as new object types would be a headache of massive proportions.

RPL already gives us the ability to tag a list or vector with a prefix so we (and our programs) don't forget what they mean. (Though newRPL doesn't have that capability yet.)