Docs: replace GrandStaff with StaffGroup in Wagner's operas

A GrandStaff is ridiculous for a full orchestra score.

diff --git a/Documentation/user/fundamental.itely b/Documentation/user/fundamental.itely
index 0a3588ef39a699cb3b5bb118116f19575a2428cf..7d34d76f29a39253d4a443670a7547fbd3a34210 100644 (file)
--- a/Documentation/user/fundamental.itely
+++ b/Documentation/user/fundamental.itely
@@ -129,7 +129,7 @@ note to a huge compound expression like
 
 @example
 @{
-  \new GrandStaff <<
+  \new StaffGroup <<
     @var{...insert the whole score of a Wagner opera in here...}
   >>
 @}
@@ -282,7 +282,7 @@ music expression and work our way down.
 @example
 \score @{
   @{ % this brace begins the overall compound music expression
-    \new GrandStaff <<
+    \new StaffGroup <<
       @var{...insert the whole score of a Wagner opera in here...}
     >>
   @} % this brace ends the overall compound music expression
@@ -292,8 +292,8 @@ music expression and work our way down.
 
 A whole Wagner opera would easily double the length of this
 manual, so let's just add a singer and piano.  We don't need a
-@code{GrandStaff} for this ensemble, which simply groups a number
-of staves together with a brace at the left, so we shall remove
+@code{StaffGroup} for this ensemble, which simply groups a number
+of staves together with a bracket at the left, so we shall remove
 it.  We @emph{do} need a singer and a piano, though.
 
 @example