X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=Documentation%2Fnotation%2Finput.itely;h=31bf09fb0736b4d1dae531fb21ab5a5005437558;hb=47db9a3883d726ca53e2133a3b2298f78dd6a32e;hp=fc2ead626d388a27ad52491105450a6ac0c5dfd9;hpb=058370efc7e9710f149d0f444328bb1fcd7bdec1;p=lilypond.git

diff --git a/Documentation/notation/input.itely b/Documentation/notation/input.itely
index fc2ead626d..31bf09fb07 100644
--- a/Documentation/notation/input.itely
+++ b/Documentation/notation/input.itely
@@ -2071,12 +2071,9 @@ LilyPond files}.
 @funindex \tag
 @funindex \keepWithTag
 @funindex \removeWithTag
-@funindex \pushToTag
-@funindex \appendToTag
 @cindex tag
 @cindex keep tagged music
 @cindex remove tagged music
-@cindex splice into tagged music
 
 The @code{\tag #'@var{partA}} command marks a music expression
 with the name @var{partA}.
@@ -2091,7 +2088,7 @@ to tagged music is as follows:
 Tagged music preceded by @code{\keepWithTag #'@var{name}} or
        @code{\keepWithTag #'(@var{name1} @var{name2}@dots{})}
 @tab Untagged music and music tagged with any of the given tag
-     names is included; 
+     names is included;
      music tagged with any other tag name is excluded.
 @item
 Tagged music preceded by @code{\removeWithTag #'@var{name}} or
@@ -2106,9 +2103,15 @@ Tagged music not preceded by either @code{\keepWithTag} or
 @end multitable
 
 The arguments of the @code{\tag}, @code{\keepWithTag} and
-@code{\removeWithTag} commands should be a symbol
-(such as @code{#'score} or @code{#'part}), followed
-by a music expression.
+@code{\removeWithTag} commands should be a symbol or list of
+symbols (such as @code{#'score} or @code{#'(violinI violinII}),
+followed by a music expression.  If @emph{and only if} the symbols
+are valid LilyPond identifiers (alphabetic characters only, no
+numbers, underscores, or dashes) which cannot be confused with notes,
+the @code{#'} may be omitted and, as a shorthand, a list of symbols
+can use the dot separator: i.e. @code{\tag #'(violinI violinII)} can
+be written @code{\tag violinI.violinII}.  The same applies to
+@code{\keepWithTag} and @code{\removeWithTag}.
 
 In the following example, we see two versions of a piece of music,
 one showing trills with the usual notation, and one with trills
@@ -2212,6 +2215,38 @@ Usually you would rather want to use a single @code{\keepWithTag}
 command with a list of multiple tags: this will only remove tagged
 sections not given in @emph{any} of the tags.
 
+@cindex tag groups
+@funindex \tagGroup
+While @code{\keepWithTag} is convenient when dealing with
+@emph{one} set of alternatives, the removal of music tagged with
+@emph{unrelated} tags is problematic when using tags for more than
+one purpose.  For that reason, @q{tag groups} of related tags can
+be declared:
+
+@example
+\tagGroup #'(violinI violinII viola cello)
+@end example
+
+declares the respective tags as belonging to one tag group.
+
+@example
+\keepWithTag #'violinI @dots{}
+@end example
+
+will then only be concerned with tags from @code{violinI}'s tag
+group: any element of the included music that is tagged with one
+or more of tags from this set but @emph{not} with @code{violinI}
+will get removed.
+
+To any @code{\keepWithTag} command, only tags from the tag groups
+of the tags given in the command are visible.
+
+Tags cannot be members of more than one tag group.
+
+@funindex \pushToTag
+@funindex \appendToTag
+@cindex splice into tagged music
+
 Sometimes you want to splice some music at a particular place in an
 existing music expression.  You can use @code{\pushToTag} and
 @code{\appendToTag} for adding material at the front or end of the
@@ -2233,9 +2268,7 @@ test = { \tag #'here { \tag #'here <<c''>> } }
 @end lilypond
 
 Both commands get a tag, the material to splice in at every occurence of
-the tag, and the tagged expression.  The commands make sure to
-copy everything that they change so that the original @code{\test}
-retains its meaning.
+the tag, and the tagged expression.
 
 @seealso
 Learning Manual:
@@ -2405,7 +2438,7 @@ lyrics and as stand-alone text below the score:
   }
   \addlyrics { O \markup { \concat { Ph \char ##x0153 be! } } }
 }
-\markup { "Copyright 2008--2014" \char ##x00A9 }
+\markup { "Copyright 2008--2015" \char ##x00A9 }
 @end lilypond
 
 @cindex copyright sign
@@ -2514,7 +2547,7 @@ In order to use this feature, LilyPond must be invoked with
 @option{-dclip-systems}.  The clips are output as EPS files, and are
 converted to PDF and PNG if these formats are switched on as well.
 
-For more information on output formats, see @rprogram{Invoking lilypond}.
+For more information on output formats, see @rprogram{Invoking LilyPond}.
 
 @node Skipping corrected music
 @subsection Skipping corrected music