silkscreen: add rectangle for adding own marker descriptions

kicad/kint.kicad_pcb

@@ -34,7 +34,7 @@
   (setup
     (last_trace_width 0.25)
     (trace_clearance 0.1524)
-    (zone_clearance 0.508)
+    (zone_clearance 0.2)
     (zone_45_only no)
     (trace_min 0.2)
     (via_size 0.8)
@@ -6265,7 +6265,7 @@
   (segment (start 128.7476 106.426) (end 125.73 109.4436) (width 0.25) (layer F.Cu) (net 88))
   (segment (start 135.165 106.426) (end 128.7476 106.426) (width 0.25) (layer F.Cu) (net 88))
 
-  (zone (net 32) (net_name GND) (layer F.Cu) (tstamp 5EE7E7F2) (hatch edge 0.508)
+  (zone (net 32) (net_name GND) (layer F.Cu) (tstamp 5EF31E51) (hatch edge 0.508)
     (priority 6)
     (connect_pads (clearance 0.000001))
     (min_thickness 0.2032)
@@ -7841,7 +7841,7 @@
       )
     )
   )
-  (zone (net 32) (net_name GND) (layer B.Cu) (tstamp 5EE7E7EF) (hatch edge 0.508)
+  (zone (net 32) (net_name GND) (layer B.Cu) (tstamp 5EF31E4E) (hatch edge 0.508)
     (priority 6)
     (connect_pads (clearance 0.000001))
     (min_thickness 0.2032)
@@ -9184,4 +9184,19 @@
       )
     )
   )
+  (zone (net 0) (net_name "") (layer B.SilkS) (tstamp 5EF31E4B) (hatch edge 0.508)
+    (connect_pads (clearance 0.2))
+    (min_thickness 0.254)
+    (fill yes (arc_segments 16) (thermal_gap 0.508) (thermal_bridge_width 0.508))
+    (polygon
+      (pts
+        (xy 126.365 129.286) (xy 171.196 129.286) (xy 171.196 134.747) (xy 126.365 134.747)
+      )
+    )
+    (filled_polygon
+      (pts
+        (xy 171.069 134.62) (xy 126.492 134.62) (xy 126.492 129.413) (xy 171.069 129.413)
+      )
+    )
+  )
 )