diff --git a/trytond/ir/ui/form.rnc b/trytond/ir/ui/form.rnc
index 9d9080e776..f9f55a30a0 100644
--- a/trytond/ir/ui/form.rnc
+++ b/trytond/ir/ui/form.rnc
@@ -90,6 +90,7 @@ attlist.field &=
     | "binary"
     | "many2many"
     | "image"
+    | "progressbar"
   }?
 attlist.field &= attribute saves { "0" | "1" }?
 attlist.field &= attribute expand { "0" | "1" }?
@@ -116,6 +117,13 @@ attlist.field &= attribute domain { text }?
 attlist.field &= attribute color { text }?
 attlist.field &=
   [ a:defaultValue = "0" ] attribute select { "0" | "1" | "2" }?
+attlist.field &=
+  [ a:defaultValue = "left_to_right" ] attribute orientation {
+    "left_to_right"
+    | "right_to_left"
+    | "bottom_to_top"
+    | "top_to_bottom"
+  }
 image = element image { attlist.image, empty }
 attlist.image &= attribute name { text }
 attlist.image &= [ a:defaultValue = "1" ] attribute colspan { text }?
diff --git a/trytond/ir/ui/form.rng b/trytond/ir/ui/form.rng
index e1a3511ea6..78883d36b8 100644
--- a/trytond/ir/ui/form.rng
+++ b/trytond/ir/ui/form.rng
@@ -274,6 +274,7 @@
           <value>binary</value>
           <value>many2many</value>
           <value>image</value>
+          <value>progressbar</value>
         </choice>
       </attribute>
     </optional>
@@ -429,6 +430,18 @@
       </attribute>
     </optional>
   </define>
+  <define name="attlist.field" combine="interleave">
+    <optional>
+      <attribute name="orientation" a:defaultValue="left_to_right">
+        <choice>
+          <value>left_to_right</value>
+          <value>right_to_left</value>
+          <value>bottom_to_top</value>
+          <value>top_to_bottom</value>
+        </choice>
+      </attribute>
+    </optional>
+  </define>
   <define name="image">
     <element name="image">
       <ref name="attlist.image"/>
diff --git a/trytond/ir/ui/tree.rnc b/trytond/ir/ui/tree.rnc
index 84cb3d8ff0..a8c1bd3c4a 100644
--- a/trytond/ir/ui/tree.rnc
+++ b/trytond/ir/ui/tree.rnc
@@ -33,6 +33,7 @@ attlist.field &=
     | "email"
     | "callto"
     | "sip"
+    | "progressbar"
   }?
 attlist.field &=
   [ a:defaultValue = "0" ] attribute select { "0" | "1" | "2" }?
@@ -41,6 +42,13 @@ attlist.field &=
 attlist.field &= attribute icon { text }?
 attlist.field &= attribute sum { text }?
 attlist.field &= attribute width { text }?
+attlist.field &=
+  [ a:defaultValue = "left_to_right" ] attribute orientation {
+    "left_to_right"
+    | "right_to_left"
+    | "bottom_to_top"
+    | "top_to_bottom"
+  }
 data = element data { attlist.data, xpath+ }
 attlist.data &= empty
 xpath = element xpath { attlist.xpath, any }
diff --git a/trytond/ir/ui/tree.rng b/trytond/ir/ui/tree.rng
index b45871d5a2..5f17050cd7 100644
--- a/trytond/ir/ui/tree.rng
+++ b/trytond/ir/ui/tree.rng
@@ -97,6 +97,7 @@
           <value>email</value>
           <value>callto</value>
           <value>sip</value>
+          <value>progressbar</value>
         </choice>
       </attribute>
     </optional>
@@ -137,6 +138,18 @@
       <attribute name="width"/>
     </optional>
   </define>
+  <define name="attlist.field" combine="interleave">
+    <optional>
+      <attribute name="orientation" a:defaultValue="left_to_right">
+        <choice>
+          <value>left_to_right</value>
+          <value>right_to_left</value>
+          <value>bottom_to_top</value>
+          <value>top_to_bottom</value>
+        </choice>
+      </attribute>
+    </optional>
+  </define>
   <define name="data">
     <element name="data">
       <ref name="attlist.data"/>