Comment improved.

git-svn-id: https://svn.apache.org/repos/asf/jakarta/poi/trunk@352991 13f79535-47bb-0310-9956-ffa450edef68

src/java/org/apache/poi/hpsf/Section.java

@@ -80,7 +80,11 @@ public class Section
 
     /**
      * <p>Returns the format ID. The format ID is the "type" of the
-     * section.</p>
+     * section. For example, if the format ID of the first {@link
+     * Section} contains the bytes specified by
+     * <code>org.apache.poi.hpsf.wellknown.SectionIDMap.SUMMARY_INFORMATION_ID</code>
+     * the section (and thus the property set) is a
+     * SummaryInformation.</p>
      *
      * @return The format ID
      */