Add test; shuffle IDs.

1 files changed, 2 insertions, 1 deletions

diff --git a/src/dcp.h b/src/dcp.h
index 3d42b92a..a7dbf5eb 100644
--- a/src/dcp.h
+++ b/src/dcp.h
@@ -63,7 +63,8 @@ class DCP : public boost::noncopyable
 public:
 	/** Construct a DCP.  You can pass an existing DCP's directory
 	 *  as the parameter; alternatively, directory will be created
-	 *  if it does not exist.
+	 *  if it does not exist.  Note that if you pass an existing DCP
+	 *  into this constructor it will not be read until you call ::read().
 	 *
 	 *  @param directory Directory containing the DCP's files.
 	 */