#6756: add some info about the "acct" parameter.
diff --git a/Doc/library/ftplib.rst b/Doc/library/ftplib.rst
index d5e2ee3..63c653b 100644
--- a/Doc/library/ftplib.rst
+++ b/Doc/library/ftplib.rst
@@ -147,7 +147,8 @@
``'anonymous@'``. This function should be called only once for each instance,
after a connection has been established; it should not be called at all if a
host and user were given when the instance was created. Most FTP commands are
- only allowed after the client has logged in.
+ only allowed after the client has logged in. The *acct* parameter supplies
+ "accounting information"; few systems implement this.
.. method:: FTP.abort()