Wish Input Indicator for M-Plex Block

[aldavis1941]

I use the M-Plex block a lot. It would be nice if there were some indication of which input is selected. For example, maybe the currently selected input could have its associated cable connection to the selected row in some special color to differentiate that row is currently active.

Also, some way to indicate that the M-Plex block is selecting an empty row would be helpful especially in diagnosing unexpected no output errors.

Thanks.