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-rw-r--r--manual/users.texi3
1 files changed, 3 insertions, 0 deletions
diff --git a/manual/users.texi b/manual/users.texi
index 20deeab..b52ee44 100644
--- a/manual/users.texi
+++ b/manual/users.texi
@@ -1690,6 +1690,9 @@ extended information about users, adding an entry using this function
would inevitably leave out much of the important information.
@c Then how are programmers to modify the password file? -zw
+The group and user ID fields are left empty if the group or user name
+starts with a - or +.
+
The function @code{putpwent} is declared in @file{pwd.h}.
@end deftypefun