Writing about matrixes used in translating between coordinate systems requires combinations of subscripts and superscripts on both the left and right side of the matrix name. e.g. right subscript on a transformation matrix indicates the departure coordinate frame, left superscript indicates the destination coordinate frame, left subscript indicate the frame that the angular vector is measure in, etc. How would I typeset that in Mathematica? Is there a way to add templates for each possible combination, like the ones in the typesetting palette? It would be great if these could also be used as symbols in calculations