Multiple Matrix entries using space key

[AnalogJoe]

Hi, im sorry yes, the thing I refer to as the Matrix Writer is the window that opens up when you hit shift + 4.

And yes on the command line I can use comma but when I hit the down cursor, instead of going to the beggining of the next row it goes to the position just below the previous row, thus I have to press the "left arrow" multiple times to go to the beggining of the row, its just inefficient.