adding comments about stuff that's not in the doc
@@ -27,8 +27,8 @@ There are 6 different staging methods that are supported by Swift. They are:
* Direct
* Swift
* Wrapper
- * Shared-fs
- * Service-local
+ * Shared-fs (not commomly used, not described below)
+ * Service-local (not commomly used, not described below)
These staging methods are explained in detail in the following sections.
