Index: trunk/pcblib/parametric/common.awk
===================================================================
--- trunk/pcblib/parametric/common.awk	(revision 691)
+++ trunk/pcblib/parametric/common.awk	(revision 692)
@@ -411,6 +411,12 @@
 			element_line(x, y,       x-half/3, y-half)
 			element_line(x-half, y-half/3, x-half/3, y-half)
 		}
+		else if (S[n] == "arc") {
+			element_arc(x, y, step/2, step/2, 180, 270)
+		}
+		else if (S[n] == "circle") {
+			element_arc(x, y, step/2, step/2, 0, 360)
+		}
 		else if ((S[n] != "none") && (S[n] != "")) {
 			error("invalid silkmark parameter: " S[n])
 		}
Index: trunk/pcblib/parametric/silkmark.help
===================================================================
--- trunk/pcblib/parametric/silkmark.help	(revision 691)
+++ trunk/pcblib/parametric/silkmark.help	(revision 692)
@@ -5,4 +5,6 @@
 #@@enum:silkmark:external45 a little trinagle placed outside of the box pointing at the corner in 45 degree
 #@@enum:silkmark:external shorthand for external
 #@@enum:silkmark:angled an angled line in the corner
+#@@enum:silkmark:arc an external 270 degree arc
+#@@enum:silkmark:arc a circle, 270 degrees external
 #@@enum:silkmark:none no mark