-The remaining arguments, SPECS, should be either a list of face
-names, or a property list of face attribute/value pairs. The
-remapping specified by SPECS takes effect alongside the
-remappings from other calls to `face-remap-add-relative', as well
-as the normal definition of FACE (at lowest priority). This
-function tries to sort multiple remappings for the same face, so
-that remappings specifying relative face attributes are applied
-after remappings specifying absolute face attributes.
+The remaining arguments, SPECS, should form a list of faces.
+Each list element should be either a face name or a property list
+of face attribute/value pairs. If more than one face is listed,
+that specifies an aggregate face, in the same way as in a `face'
+text property, except for possible priority changes noted below.
+
+The face remapping specified by SPECS takes effect alongside the
+remappings from other calls to `face-remap-add-relative' for the
+same FACE, as well as the normal definition of FACE (at lowest
+priority). This function tries to sort multiple remappings for
+the same face, so that remappings specifying relative face
+attributes are applied after remappings specifying absolute face
+attributes.