--- a/ui/certificate.h	Tue Apr 15 12:05:07 2014 +0200
+++ b/ui/certificate.h	Tue Apr 15 12:05:22 2014 +0200
@@ -20,11 +20,12 @@
 {
 public:
 
+    /** @brief the Status compared to the last installed list. */
     enum Status {
-        InstallNew = 1,
-        InstallOld,
-        RemoveNew,
-        RemoveOld
+        InstallNew = 1, /* Never seen this before */
+        InstallOld, /* Already contained in last list */
+        RemoveNew, /* Was an Install certificate in the last list */
+        RemoveOld /* Already removed in the last list */
     };
 
     /** @brief construct a certificate from a line of a certificate list.