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-rw-r--r--doc/guix.texi4
1 files changed, 4 insertions, 0 deletions
diff --git a/doc/guix.texi b/doc/guix.texi
index 2060da9c55..cef2aba9a8 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -3201,6 +3201,10 @@ The group's name.
 The group identifier (a number).  If @code{#f}, a new number is
 automatically allocated when the group is created.
 
+@item @code{system?} (default: @code{#f})
+This Boolean value indicates whether the group is a ``system'' group.
+System groups have low numerical IDs.
+
 @item @code{password} (default: @code{#f})
 What, user groups can have a password?  Well, apparently yes.  Unless
 @code{#f}, this field specifies the group's password.