Merge commit 'origin' into beamlets2

[lilypond.git] / Documentation / user / chords.itely

diff --git a/Documentation/user/chords.itely b/Documentation/user/chords.itely
index c66c74f2246ae3faffa7aed2b7975a5676271a2e..11b45b66891615e096148f866996df9a976c7c17 100644 (file)
--- a/Documentation/user/chords.itely
+++ b/Documentation/user/chords.itely
@@ -139,7 +139,10 @@ Seventh chords can be created:
 @funindex m
 
 The table belows shows the actions of the quality modifiers on
-triads and seventh chords.  A more complete table of modifier usage
+triads and seventh chords.  The default seventh step added to
+chords is a minor or flatted seventh, which makes the dominant
+seventh the basic seventh chord.  All alterations are relative to 
+the dominant seventh.  A more complete table of modifier usage
 is found at @ref{Common chord modifiers}.
 
 @c @table @code
@@ -167,8 +170,7 @@ The default action; produces a major triad.
 @item
 m, m7
 @tab
-The minor chord.  This modifier lowers the 3rd and (if present) the
-7th step.
+The minor chord.  This modifier lowers the 3rd.
 @tab
 @lilypond[line-width=4\cm, noragged-right]
 \chordmode {
@@ -222,11 +224,20 @@ to create a major triad.
 
 @seealso
 Notation Reference:
-@ref{Common chord modifiers}.
+@ref{Common chord modifiers},
+@ref{Extended and altered chords}.
 
 Snippets:
 @rlsr{Chords}.
 
+@knownissues
+Only one quality modifier should be used per chord, typically on the 
+highest step present in the chord.  Chords with more than quality
+modifier will be parsed without an error or warning, but the results
+are unpredictable.  Chords that cannot be achieved with a single
+quality modifier should be altered by individual pitches, as described
+in @ref{Extended and altered chords}.
+
 
 @node Extended and altered chords
 @unnumberedsubsubsec Extended and altered chords
@@ -242,6 +253,8 @@ or create an inversion.
 The first number following the @code{:} is taken to be the extent
 of the chord.  The chord is constructed by sequentially adding
 thirds to the root until the specified number has been reached.
+Note that the seventh step added as part of an extended chord will be the
+minor or flatted seventh, not the major seventh.
 If the extent is not a third (e.g., 6), thirds are added up to the
 highest third below the extent, and then the step of the extent is
 added.  The largest possible value for the extent is 13.  Any
@@ -272,7 +285,9 @@ is added explicitly).
 @cindex additions, in chords
 
 Individual steps can be added to a chord.  Additions follow the
-extent and are prefixed by a dot (@code{.}).
+extent and are prefixed by a dot (@code{.}).  The basic seventh
+step added to a chord is the minor or flatted seventh, rather than
+the major seventh.
 
 @lilypond[quote,verbatim,fragment,relative=1]
 \chordmode {