Document rewarded display declaration

features/firstPartyData.md

@@ -75,15 +75,13 @@ pbjs.setConfig({
                 }]
 	   },
 	   ext: {
-               data: {   // fields that aren't part of openrtb 2.5
+               data: {   // fields that aren't part of openrtb 2.6
                    pageType: "article",
                    category: "repair"
                }
 	   }
         },
         user: {
-           yob: 1985,
-           gender: "m",
            keywords: "a,b",
 	   data: [{
 	       name: "dataprovider.com",
@@ -169,6 +167,30 @@ pbjs.addAdUnits({
 });
 {% endhighlight %}
 
+Another case is [declaring rewarded](https://github.com/InteractiveAdvertisingBureau/openrtb2.x/blob/422eedb76e8730c89dcac75c7427c18cfa10e8c4/2.6.md?plain=1#L993). Here is how one might do that: 
+
+
+{% highlight js %}
+pbjs.addAdUnits({
+    code: "test-div-rewarded",
+    mediaTypes: {
+        banner: {
+            sizes: [[300,250]]
+        }
+    },
+    ortb2Imp: {
+        rwdd: 1,
+        ext: {
+	        data: {
+                pbadslot: "my-rewarded-rectangle",
+                adUnitSpecificAttribute: "123"
+            }
+        }
+    },
+    ...
+});
+{% endhighlight %}
+
 You may also specify adUnit-specific transaction IDs using `ortb2Imp.ext.tid`, and Prebid will use them instead of generating random new ones. This is useful if you are auctioning the same slots through multiple header bidding libraries. Note: you must take care to not re-use the same transaction IDs across different ad units or auctions. Here's a simplified example passing a tid through the [requestBids](/dev-docs/publisher-api-reference/requestBids.html) function:
 
 {% highlight js %}