Entry line Matrix editing

[DrD]

Is it (is) or is it (is not) able to insert a row in a matrix on the ENTRY LINE BEFORE the first row?

The virtual calc Help|User Guide suggests I can make any size matrix, but it offered no suggestion on how to increase a matrix before element (1,1).

Example: Entry line contains --> [[1,2,3],[9,8,7]]
append this --> [0,0,0]
making it thus --> [[0,0,0],[1,2,3],[9,8,7]]

+/- doesn't seem to do 'before row' editing.

-Dale-