--- /dev/null
+This module matches the 6 bit DSCP field within the TOS field in the
+IP header. DSCP has superseded TOS within the IETF.
+.TP
+[\fB!\fP] \fB--dscp\fP \fIvalue\fP
+Match against a numeric (decimal or hex) value [0-63].
+.TP
+[\fB!\fP] \fB--dscp-class\fP \fIclass\fP
+Match the DiffServ class. This value may be any of the
+BE, EF, AFxx or CSx classes. It will then be converted
+into its according numeric value.