adapted corner anchors for ALU, EXT and MUX

src/elements/alu.typ

@@ -24,6 +24,10 @@
     draw.anchor("south", (p2, 50%, p3))
     draw.anchor("west", (p0, 50%, p3))
     draw.anchor("east", (p1, 50%, p2))
+    draw.anchor("north-west", p0)
+    draw.anchor("north-east", p1)
+    draw.anchor("south-east", p2)
+    draw.anchor("south-west", p3)
     draw.anchor("name", (p5, 50%, (p1, 50%, p2)))
   })
 

src/elements/extender.typ

@@ -30,6 +30,10 @@
     draw.anchor("south", (bl, 50%, br))
     draw.anchor("west", (tl, 50%, bl))
     draw.anchor("east", (tr2, 50%, br))
+    draw.anchor("north-west", tl)
+    draw.anchor("north-east", tr2)
+    draw.anchor("south-east", br)
+    draw.anchor("south-west", bl)
   })
   return (f, tl, tr, br, bl)
 }

src/elements/multiplexer.typ

@@ -19,6 +19,10 @@
     draw.anchor("south", (bl, 50%, br2))
     draw.anchor("west", (tl, 50%, bl))
     draw.anchor("east", (tr2, 50%, br2))
+    draw.anchor("north-west", tl)
+    draw.anchor("north-east", tr2)
+    draw.anchor("south-east", br2)
+    draw.anchor("south-west", bl)
   })
 
   return (f, tl, tr, br, bl)