+Staves may be stopped and started halfway a line, e.g.
+
+@lilypond[relative=2,fragment,verbatim]
+b4 b \stopStaff b \startStaff b
+@end lilypond
+
+@noindent
+This feature has been sponsored by Hans Forbrich.
+
+@item
+Grid lines, vertical lines synchronized with notes, can be drawn across
+staves, by adding suitable engravers.
+An example is in @inputfileref{input/regression,grid-lines.ly},
+
+@lilypondfile[]{grid-lines.ly}
+
+@item
+Lines, such as glissandi or Text-spanner lines, can have arrows at the
+end, e.g.