DOC: fix T1811 warning re cueDuring fontsize

DOC: NR Warning added to para for cueDuring
As per Tracker 1811.
Added @warning{} to alert users to create
explicit contexts in certain cases.

diff --git a/Documentation/notation/staff.itely b/Documentation/notation/staff.itely
index 2ff805b1b87fea0e1f76053d882878d383cdd391..4c626feb9003a3a2e40f247fbf9eef2dc3ee1ecc 100644 (file)
--- a/Documentation/notation/staff.itely
+++ b/Documentation/notation/staff.itely
@@ -1301,9 +1301,10 @@ tie-event beam-event tuplet-span-event)}, which means that only
 notes, rests, ties, beams and tuplets are quoted, but not
 articulations, dynamic marks, markup etc.
 
-In this example, the @code{Voice} context must be
-explicitly declared, or else the entire music expression would
-belong to the @code{CueVoice} context.
+@warning{When a @code{Voice} starts with @code{\cueDuring}, as in the
+following example, the @code{Voice} context must be explicitly declared,
+or else the entire music expression would belong to the @code{CueVoice}
+context.}
 
 @lilypond[verbatim,quote]
 oboeNotes = \relative c'' {