– Docx equation editor does not automatically italize characters you if are entering with a non-Romanized input method, even if the characters you enter are alphabets.

– Excel .MMULT function requires the two inputs to have the same dimension. You can use it to multiply two 1-dimensional arrays or two 2-dimensional ones, but multiplying a 1D array with a 2D one will fail with an “unable to get the MMult property of the worksheet function class” error. The practical meaning of this is that if one of your input is just a vector, you still need to declare it as a 2D array.