CAS: Matrix Index Display

[Helge Gabert]

Not a big deal, but somewhat annoying - -in CAS, it is possible to directly refer to elements of a matrix by row and column numbers within brackets, e.g.

[[2 3][4 5]][2 1] returns 4.

However, the history screen now shows [[2 3][4 5]]([1 1]); the row number is decreased by 1, but the column number is correct.

Copying this reveals the correct indices again, but the history stays wrong.

Vector indices appear to be displayed correctly.