diff --git a/P5/Source/Guidelines/en/CO-CoreElements.xml b/P5/Source/Guidelines/en/CO-CoreElements.xml
index b8885c7395..c2750b2b16 100644
--- a/P5/Source/Guidelines/en/CO-CoreElements.xml
+++ b/P5/Source/Guidelines/en/CO-CoreElements.xml
@@ -1048,8 +1048,16 @@ overshadows the historical content</quote>.</egXML>
         <specDesc key="term"/>
         <specDesc key="gloss"/>
       </specList>
-      These elements are also members of
-      the class <ident type="class">model.emphLike</ident>.
+      These elements are members of
+      the class <ident type="class">model.emphLike</ident>. As a member of the class <ident type="class">att.placement</ident>, the <gi>gloss</gi> element also carries the
+      <att>place</att> attribute for indicating where the
+      gloss is with respect to the text.
+      <specList>
+        <specDesc key="att.placement"/>
+      </specList>
+      The most relevant suggested values of <att>place</att> for
+      glosses that occur in the margin of the text are <val>top</val>, <val>bottom</val>,
+      and <val>margin</val>. The <att>place</att> values <val>above</val> and <val>below</val> may be used for glosses that occur above or below a line of text.
     </p>
     <p>A <gi>term</gi> may appear with or without a gloss, as may a
       <gi>mentioned</gi> element.  Where the <gi>gloss</gi> is present, it may