web commit by JeremyReed: Document account_creation_password -- some of this text...

diff --git a/doc/plugins/passwordauth.mdwn b/doc/plugins/passwordauth.mdwn
index 84c63c4af9dabffe2188ba3f864348509cc20d23..22a0776ed24605c1273a245cf44b1b0192526919 100644 (file)
--- 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.)
+
+