once in a while. They may lag several versions behind the latest
version.
+Beams, slurs and crescendi are not displayed at all!
+----------------------------------------------------
+
+ XDvi uses GhostScript for displaying PostScript, check that you have
+GhostScript installed. If you use a different DVI viewer (eg, on
+Windows), check if it will display embedded PostScript. Don't worry,
+the symbols should appear on the printout.
+