Hi, In the qt frontend the tooltip when you place the mouse over the box in Math Panel -> Insert Matrix -> Alignmet -> Horizontal says that possible alignments are (t,c,b). Where not them supposed to be (l,c,r)? Lyx itself complains when you input t or b:
unknown column separator: 't' unknown column separator: 'b' The bug is present in 1.3.1cvs and 1.4.0cvs. João.
