Index: release/scripts/ui/space_view3d.py
===================================================================
--- release/scripts/ui/space_view3d.py	(revision 30910)
+++ release/scripts/ui/space_view3d.py	(working copy)
@@ -791,8 +791,8 @@
         layout.separator()
 
         props = layout.operator("object.isolate_type_render")
+        props = layout.operator("object.hide_render_clear_all")
 
-
 class VIEW3D_MT_object_apply(bpy.types.Menu):
     bl_label = "Apply"
 
Index: release/scripts/op/object.py
===================================================================
--- release/scripts/op/object.py	(revision 30910)
+++ release/scripts/op/object.py	(working copy)
@@ -528,9 +528,9 @@
 
 
 class IsolateTypeRender(bpy.types.Operator):
-    '''Select object matching a naming pattern'''
+    '''Hide unselected render objects of same type as active by setting the hide render flag'''
     bl_idname = "object.isolate_type_render"
-    bl_label = "Isolate Render Selection"
+    bl_label = "Restrict Render Unselected"
     bl_options = {'REGISTER', 'UNDO'}
 
     def execute(self, context):
@@ -545,8 +545,19 @@
                     obj.hide_render = True
 
         return {'FINISHED'}
+        
+class ClearAllRestrictRender(bpy.types.Operator):
+    '''Reveal all render objects by setting the hide render flag'''
+    bl_idname = "object.hide_render_clear_all"
+    bl_label = "Clear All Restrict Render"
+    bl_options = {'REGISTER', 'UNDO'}
 
+    def execute(self, context):
+        for obj in context.scene.objects:
+        	obj.hide_render = False
+        return {'FINISHED'}
 
+
 classes = [
     SelectPattern,
     SelectCamera,
@@ -555,7 +566,8 @@
     ShapeTransfer,
     JoinUVs,
     IsolateTypeRender,
-    MakeDupliFace]
+    MakeDupliFace,
+    ClearAllRestrictRender]
 
 
 def register():