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-rw-r--r--doc/plugins/passwordauth.mdwn8
1 files changed, 8 insertions, 0 deletions
diff --git a/doc/plugins/passwordauth.mdwn b/doc/plugins/passwordauth.mdwn
index 84c63c4af..22a0776ed 100644
--- a/doc/plugins/passwordauth.mdwn
+++ b/doc/plugins/passwordauth.mdwn
@@ -7,3 +7,11 @@ changing passwords in the prefs page.
It is enabled by default, but can be turned off if you want to only use
some other form of authentication, such as [[httpauth]] or [[openid]].
+
+When the *account\_creation\_password* configuration option is enabled with
+a pass-phrase, this plugin supports an "account creation password" as a
+simplistic anti-spam measure.
+(Some wikis edited by a particular group use an account creation password
+as an "ask an existing member to get an account" system.)
+
+