--- /dev/null
+\version "2.16.0"
+
+\header{
+ texidoc="
+Adding material to a tag in sequential and simultaneous expressions
+using @code{\\pushToTag} and @code{\\appendToTag}. One should get the
+equivalent of
+@example
+@{ c' e' g' <<c' e' g' c''>> <<c'' g' e' c'>> g' e' c' @}
+@end example
+"
+}
+
+\layout { ragged-right = ##t }
+
+test = { \tag #'here { \tag #'here <<c''>> }}
+
+{
+ \pushToTag #'here c'
+ \pushToTag #'here e'
+ \pushToTag #'here g' \test
+ \appendToTag #'here c'
+ \appendToTag #'here e'
+ \appendToTag #'here g' \test
+}
+