diff --git a/app/examples.json b/app/examples.json
index 2309715..8458a68 100644
--- a/app/examples.json
+++ b/app/examples.json
@@ -49,7 +49,7 @@
         "repo": "github.com/asim/helloworld",
         "branch": "master",
         "port": 8080,
-        "region": "eu-west-1"
+        "region": "europe-west1"
       },
       "response": {
           "service": {
diff --git a/app/proto/app.proto b/app/proto/app.proto
index e0a4ef0..14a0fdb 100644
--- a/app/proto/app.proto
+++ b/app/proto/app.proto
@@ -59,7 +59,7 @@ message ListResponse {
 	repeated Service services = 1;
 }
 
-// Run an app
+// Run an app from a source repo. Specify region etc.
 message RunRequest {
 	// name of the app
 	string name = 1;
@@ -80,7 +80,7 @@ message RunResponse {
 	Service service = 1;
 }
 
-// Update the app
+// Update the app. The latest source code will be downloaded, built and deployed.
 message UpdateRequest {
 	// name of the app
 	string name = 1;