Hi, I don't even know if it's supposed to work, but if I work with German special characters in matrix row names, the output is slightly misarranged. <hansl> string ex = "ÄÜß hi" matrix in = {1, 3; 5, 6} err = rownames(in, ex) print in </hansl> Apart from that gretl has suddenly started acting very sluggishly again, I'll investigate if it has to do with the names of matrix columns or rows. thanks, sven