Update NR font size section (Issue 3370) (issue 235920043 by address@hidden)

[PhilEHolmes]

Reviewers: Trevor Daniels, J_lowe,

Message:
Please review

Description:
Update NR font size section (Issue 3370)

Please review this at https://codereview.appspot.com/235920043/

Affected files (+9, -0 lines):
  M Documentation/notation/text.itely


Index: Documentation/notation/text.itely
diff --git a/Documentation/notation/text.itely  
b/Documentation/notation/text.itely
index  
ac5436b94b6fcde8e9119c01396a6e4aef43f745..221e2fdcfff717b4dc7dec71419debd61c82f037  
100644
--- a/Documentation/notation/text.itely
+++ b/Documentation/notation/text.itely
@@ -573,6 +573,15 @@ b1^\markup { \abs-fontsize #8 da }
 b1-\markup { \abs-fontsize #14 camera }
 @end lilypond

+If the text includes spaces, then it is best to put it all inside quote
+marks, so that the size of each space is appropriate for the size of the
+other characters.
+
address@hidden,verbatim]
+\markup \fontsize #6 \bold { Sinfonia da camera }
+\markup \fontsize #6 \bold { "Sinfonia da camera" }
address@hidden lilypond
+
 @cindex subscript
 @cindex superscript