diff --git a/doctypes/dtd/technicalContent/reference.mod b/doctypes/dtd/technicalContent/reference.mod
index 3898a62d..d3f0b839 100644
--- a/doctypes/dtd/technicalContent/reference.mod
+++ b/doctypes/dtd/technicalContent/reference.mod
@@ -142,7 +142,7 @@
                keycol
                           NMTOKEN
                                     #IMPLIED
-               %display-atts;
+               %simpletable-display-atts;
                %univ-atts;"
 >
 <!ELEMENT  properties %properties.content;>
diff --git a/doctypes/dtd/technicalContent/task.mod b/doctypes/dtd/technicalContent/task.mod
index b78833b2..d8222ac5 100644
--- a/doctypes/dtd/technicalContent/task.mod
+++ b/doctypes/dtd/technicalContent/task.mod
@@ -332,7 +332,7 @@
                keycol
                           NMTOKEN
                                     '1'
-               %display-atts;
+               %simpletable-display-atts;
                %univ-atts;"
 >
 <!ELEMENT  choicetable %choicetable.content;>
diff --git a/doctypes/rng/technicalContent/referenceMod.rng b/doctypes/rng/technicalContent/referenceMod.rng
index 660c9197..5504abf6 100644
--- a/doctypes/rng/technicalContent/referenceMod.rng
+++ b/doctypes/rng/technicalContent/referenceMod.rng
@@ -266,7 +266,7 @@ PUBLIC "-//OASIS//ELEMENTS DITA 2.0 Reference//EN"
             <data type="NMTOKEN"/>
           </attribute>
         </optional>
-        <ref name="display-atts"/>
+        <ref name="simpletable-display-atts"/>
         <ref name="univ-atts"/>
       </define>
       <define name="properties.element">
diff --git a/doctypes/rng/technicalContent/taskMod.rng b/doctypes/rng/technicalContent/taskMod.rng
index c89d785b..d75f5b07 100644
--- a/doctypes/rng/technicalContent/taskMod.rng
+++ b/doctypes/rng/technicalContent/taskMod.rng
@@ -678,7 +678,7 @@ PUBLIC "-//OASIS//ELEMENTS DITA 2.0 Task//EN"
             <data type="NMTOKEN"/>
           </attribute>
         </optional>
-        <ref name="display-atts"/>
+        <ref name="simpletable-display-atts"/>
         <ref name="univ-atts"/>
       </define>
       <define name="choicetable.element">
diff --git a/specification/baseSpec b/specification/baseSpec
index f41eda38..a29fd51c 160000
--- a/specification/baseSpec
+++ b/specification/baseSpec
@@ -1 +1 @@
-Subproject commit f41eda38882b0ea9e2242f02ea86e784ba56c3c7
+Subproject commit a29fd51c0772fda797d7d6b9e829c8ffe52f8aa0