problems when paste text // (commentary) to the entry line

[Wes Loewer]

I think I see what you mean. You are copying something containing "//" and pasting it to the Home or CAS command line. So "1//2" gets parsed as nested stacked fractions in Textbook mode. In Algebraic mode, you get 1//2 which generates a syntax error.

RPN mode actually does seem to treat // as a comment with "1 2 3 // 4 5" parsing the same as "1 2 3". This was also the behavior on the 50g (@ was the comment char).

Just curious, were you hoping the comments would show as comments? or just get ignored?