X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/f013fb920d2e20efabe9dfbdb3a34674e9ef8f75..f2dd649a6558f5a4cf6c7f576e2fbc0d2a27730d:/doc/doc-docbook/spec.xfpt

diff --git a/doc/doc-docbook/spec.xfpt b/doc/doc-docbook/spec.xfpt
index b640daec6..bf7a987b9 100644
--- a/doc/doc-docbook/spec.xfpt
+++ b/doc/doc-docbook/spec.xfpt
@@ -1,4 +1,4 @@
-. $Cambridge: exim/doc/doc-docbook/spec.xfpt,v 1.68 2009/11/16 19:10:45 nm4 Exp $
+. $Cambridge: exim/doc/doc-docbook/spec.xfpt,v 1.69 2009/11/16 19:15:36 nm4 Exp $
 .
 . /////////////////////////////////////////////////////////////////////////////
 . This is the primary source of the Exim Manual. It is an xfpt document that is
@@ -9589,6 +9589,17 @@ For single-key lookup types, no quoting is ever necessary and this operator
 yields an unchanged string.
 
 
+.vitem &*${randint:*&<&'n'&>&*}*&
+.cindex "random number"
+This operator returns a somewhat random number which is less than the
+supplied number and is at least 0.  The quality of this randomness depends
+on how Exim was built; the values are not suitable for keying material.
+If Exim is linked against OpenSSL then RAND_pseudo_bytes() is used.
+Otherwise, the implementation may be arc4random(), random() seeded by
+srandomdev() or srandom(), or a custom implementation even weaker than
+random().
+
+
 .vitem &*${rfc2047:*&<&'string'&>&*}*&
 .cindex "expansion" "RFC 2047"
 .cindex "RFC 2047" "expansion operator"