diff --git a/man/login.defs.d/TTYGROUP.xml b/man/login.defs.d/TTYGROUP.xml
index e7cb53d0..8e0a9e87 100644
--- a/man/login.defs.d/TTYGROUP.xml
+++ b/man/login.defs.d/TTYGROUP.xml
@@ -13,15 +13,16 @@
group, and the permissions will be set to
.
-
- By default, the ownership of the terminal is set to the user's
- primary group and the permissions are set to
- 0600.
-
can be either the name of a group or a
numeric group identifier.
+
+ If TTYGROUP is not defined, then the group ownership of the terminal is
+ set to the user's primary group. If TTYPERM is not defined, then the
+ permissions are set to
+ 0600.
+
If you have a write program which is "setgid" to
a special group which owns the terminals, define TTYGROUP to the