+@snippets
+
+@lilypondfile[verbatim,lilyquote,ragged-right,texidoc,doctitle]
+{use-square-bracket-at-the-start-of-a-staff-group.ly}
+
+@lilypondfile[verbatim,lilyquote,ragged-right,texidoc,doctitle]
+{display-bracket-with-only-one-staff-in-a-system.ly}
+
+@cindex mensurstriche layout
+@cindex renaissance music
+@cindex transcription of mensural music
+@cindex mensural music, transcription of
+
+@lilypondfile[verbatim,lilyquote,ragged-right,texidoc,doctitle]
+{mensurstriche-layout-bar-lines-between-the-staves.ly}
+@c FIXME: move to NR 2.8.x when sectioning is ready
+
+@seealso
+
+Music Glossary: @rglos{brace},
+@rglos{bracket}, @rglos{grand staff}.
+
+Snippets:
+@rlsr{Staff notation}.
+
+Internals Reference: @rinternals{Staff}, @rinternals{ChoirStaff},
+@rinternals{GrandStaff}, @rinternals{PianoStaff},
+@rinternals{StaffGroup}, @rinternals{systemStartDelimiter},
+@rinternals{SystemStartBar}, @rinternals{SystemStartBrace},
+@rinternals{SystemStartBracket}, @rinternals{systemStartSquare}.
+
+
+@node Deeper nested staff groups
+@subsubsection Deeper nested staff groups
+
+There are also two inner staff contexts named @code{InnerStaffGroup}
+and @code{InnerChoirStaffGroup} besides the grouping contexts mentioned
+in @ref{Grouping staves}. They behave in the same way as their simple
+counterparts, except that they are contained in another staff grouping
+context, thus producing one more bracket on top of the existing one.
+Note that @code{GrandStaff} and @code{PianoStaff} do not have any inner
+grouping contexts. They can both be inside any other staff context,
+including inner staff groups, though.
+
+Here is an example of an orchestral score using groupings and nesting
+of these groupings. Note that the instrument names are omitted from the
+source code, for instructions how to set them see @ref{Instrument names}.
+
+@cindex staff, nested
+@cindex staves, nested
+@cindex nesting of staves
+@cindex system start delimiters, nested
+@cindex nested staff brackets
+@cindex brackets, nesting of
+@cindex braces, nesting of
+@cindex inner staff group
+@cindex inner choir staff group
+
+
+@example
+\score @{ <<
+ \new StaffGroup %woodwinds