Document --properties with other global options
diff --git a/runner/src/main/java/org/jclouds/cli/runner/Main.java b/runner/src/main/java/org/jclouds/cli/runner/Main.java
index 0682095..28506f1 100644
--- a/runner/src/main/java/org/jclouds/cli/runner/Main.java
+++ b/runner/src/main/java/org/jclouds/cli/runner/Main.java
@@ -223,6 +223,8 @@
                 // list options
                 sb.append("\n\nOptions:")
                     .append('\n').append(INDENT)
+                    .append("--properties: File containing properties")
+                    .append('\n').append(INDENT)
                     .append("--provider:   The id of the provider")
                     .append('\n').append(INDENT)
                     .append("--api:        The id of the api")