BGA footprint: silkscreen ticks for verification

of relative alignment between BGA silkscreen and the pads

footprints/lattice/lfe5bg381.pretty/BGA-381_pitch0.8mm_dia0.4mm.kicad_mod

@@ -1,11 +1,19 @@
-(module lfe5bg381:BGA-381_pitch0.8mm_dia0.4mm (layer F.Cu) (tedit 59C3A315)
+(module lfe5bg381:BGA-381_pitch0.8mm_dia0.4mm (layer F.Cu) (tedit 59D4B869)
   (attr smd)
   (fp_text reference U1 (at -8.2 -9.8) (layer F.SilkS)
     (effects (font (size 1 1) (thickness 0.15)))
   )
-  (fp_text value LFE5U-25F-6BG381C (at 1.6 -9.8) (layer F.Fab)
+  (fp_text value LFE5U-25F-6BG381C (at 0.07 -11.902) (layer F.Fab)
     (effects (font (size 1 1) (thickness 0.15)))
   )
+  (fp_line (start -7.6 -7.6) (end -7.4 -7.6) (layer F.SilkS) (width 0.15))
+  (fp_line (start -7.6 -7.4) (end -7.6 -7.6) (layer F.SilkS) (width 0.15))
+  (fp_line (start 7.6 -7.6) (end 7.6 -7.4) (layer F.SilkS) (width 0.15))
+  (fp_line (start 7.4 -7.6) (end 7.6 -7.6) (layer F.SilkS) (width 0.15))
+  (fp_line (start 7.6 7.6) (end 7.6 7.4) (layer F.SilkS) (width 0.15))
+  (fp_line (start 7.4 7.6) (end 7.6 7.6) (layer F.SilkS) (width 0.15))
+  (fp_line (start -7.6 7.6) (end -7.4 7.6) (layer F.SilkS) (width 0.15))
+  (fp_line (start -7.6 7.4) (end -7.6 7.6) (layer F.SilkS) (width 0.15))
   (fp_line (start -8.2 -9) (end -9 -8.2) (layer F.SilkS) (width 0.15))
   (fp_line (start -9 9) (end -9 -9) (layer F.SilkS) (width 0.15))
   (fp_line (start 9 9) (end -9 9) (layer F.SilkS) (width 0.15))
@@ -777,4 +785,9 @@
     (solder_mask_margin 0.04))
   (pad Y19 smd circle (at 6.8 7.6) (size 0.35 0.35) (layers F.Cu F.Paste F.Mask)
     (solder_mask_margin 0.04))
+  (model Housings_BGA.3dshapes/BGA-256_16x16_17.0x17.0mm_Pitch1.0mm.wrl
+    (at (xyz 0 0 0))
+    (scale (xyz 1 1 1))
+    (rotate (xyz 0 0 0))
+  )
 )