X-Git-Url: https://code.citadel.org/?p=citadel.git;a=blobdiff_plain;f=citadel%2Ftechdoc%2Fhack.txt;h=f75f596f8db4e438f422675df2383d579cc93ff9;hp=38d09f4f6c33cf9e134ebcc412253b3a435b480d;hb=d8ea0b390e111014f00a43ed0acf3aeb53987901;hpb=1b6ce4c45c7312af6a40f4e4952101c0ec4b26d4

diff --git a/citadel/techdoc/hack.txt b/citadel/techdoc/hack.txt
index 38d09f4f6..f75f596f8 100644
--- a/citadel/techdoc/hack.txt
+++ b/citadel/techdoc/hack.txt
@@ -291,6 +291,8 @@ Y	carbon copY	Optional, and only in Mail messages.
 1	suppress index	The presence of this field indicates that the message is
 			disqualified from being added to the full text index.
 2	extnotify	Used internally by the serv_extnotify module.
+3	msgnum		Used internally to pass the local message number in the
+			database to after-save hooks.  Discarded afterwards.
   
 			EXAMPLE