diff -r 000000000000 -r cdbb57192764 doc.maildir_tag
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/doc.maildir_tag	Sat Feb 12 14:35:04 2011 +0100
@@ -0,0 +1,20 @@
+# HG changeset patch
+# Parent edb5de053fb4b1e81d7ae2eeb4b5afd977fb1978
+diff -r edb5de053fb4 -r ceca9fed510e doc/spec.txt
+--- a/doc/spec.txt	Fri Feb 11 21:12:38 2011 +0100
++++ b/doc/spec.txt	Fri Feb 11 21:35:49 2011 +0100
+@@ -18794,6 +18794,14 @@
+ empty, it is ignored. If it starts with an alphanumeric character, a leading
+ colon is inserted.
+ 
++Please note, that normally you want to use 
++
++	maildir_tag = ,S=${message_size}
++
++The default prefix choosen (a colon) may be misinterpreted by other maildir
++clients. Please check their documentation about the expected format of
++the filename;
++
+ 26.7Â Using a maildirsize file
+ 
+ If maildir_use_size_file is true, Exim implements the maildir++ rules for