documenting histogram colour spec

diff --git a/help/html/features/annotationsFormat.html b/help/html/features/annotationsFormat.html
index 88b306a..fcec5c0 100755 (executable)
--- a/help/html/features/annotationsFormat.html
+++ b/help/html/features/annotationsFormat.html
@@ -44,7 +44,8 @@ GRAPH_TYPE. The allowed values of GRAPH_TYPE and the format of their respective
 </ul>
 Any or all value fields may be left empty, as well as the BAR_GRAPH's
 text character field, and either or both of the text-label and secondary
-structure symbol fields of the NO_GRAPH type annotation rows.
+structure symbol fields of the NO_GRAPH type annotation rows.</p>
+<p>Color strings can be embedded in a value field by enclosing an RGB triplet in square brackets to colour that position in an annotation row.  
 </p>
 <p>You can associate an annotation with a sequence by preceding its
 definition with the line: