[Gretl-devel] delete matrix

Dear all, is there a way to delete a matrix? The "delete" command does not work for matrices (by the way also "rename" is not considered -- even though I don't know whether this is a relevant case). I am asking as I face a case where I would like to drop a huge matrix "x" demanding a lot of RAM after exploiting its information content. The only way I see to reduce its size is by running "matrix x = zeros(1,1)"... Best, Artur