* Issue 'cancel' messages for vCard when a user is deleted.

[citadel.git] / citadel / techdoc / hack.txt

diff --git a/citadel/techdoc/hack.txt b/citadel/techdoc/hack.txt
index 889d562006a276bdaa1d0ca1e76c5d63c0e5b344..6218a80a47245540f72e98cd0f13817b209425ca 100644 (file)
--- a/citadel/techdoc/hack.txt
+++ b/citadel/techdoc/hack.txt
@@ -112,8 +112,11 @@ S       Special field   Only meaningful for messages being spooled over a
                         network.  Usually means that the message isn't really
                         a message, but rather some other network function:
                         -> "S" followed by "FILE" (followed by a null, of
-                        course) means that the message text is actually an
-                        IGnet/Open file transfer.
+                           course) means that the message text is actually an
+                           IGnet/Open file transfer.
+                       -> "S" followed by "CANCEL" means that this message
+                          should be deleted from the local message base once
+                          it has been replicated to all network systems.
 T      Date/Time       A 32-bit integer containing the date and time of
                         the message in standard UNIX format (the number
                         of seconds since January 1, 1970 GMT).