make.conf: example for ACCEPT_LICENSE
diff --git a/cnf/make.conf b/cnf/make.conf
index cc76d13..b90d615 100644
--- a/cnf/make.conf
+++ b/cnf/make.conf
@@ -78,6 +78,18 @@
 #
 #ACCEPT_KEYWORDS="~arch"
 
+# ACCEPT_LICENSE is used to mask packages based on licensing restrictions.
+# It may contain both license and group names, where group names are
+# prefixed with the '@' symbol. License groups are defined in the
+# license_groups file (see portage(5) man page). In addition to license
+# and group names, the * and -* wildcard tokens are also supported.
+#
+# Accept any license except those in the EULA license group (default).
+#ACCEPT_LICENSE="* -@EULA"
+#
+# Only accept licenses in the FREE license group (i.e. Free Software).
+#ACCEPT_LICENSE="-* @FREE"
+
 # Portage Directories
 # ===================
 #