diff --git a/linolib/box.lino b/linolib/box.lino
index 0e5ba97..b5ac4ce 100644
--- a/linolib/box.lino
+++ b/linolib/box.lino
@@ -9,10 +9,10 @@ define box {
   point nw, n, ne, e, se, s, sw, w, c;
   number ht, wd;
   constraints {
-    nw = left.start  = top.start;
-    ne = right.start = top.end;
-    sw = left.end    = bottom.start;
-    se = right.end   = bottom.end;
+    nw = left.end    = top.start;
+    ne = right.end   = top.end;
+    sw = left.start  = bottom.start;
+    se = right.start = bottom.end;
 
     n = (nw + ne)/2;
     s = (sw + se)/2;
diff --git a/t/box001-i b/t/box001-i
index 3a71b32..d06b199 100644
--- a/t/box001-i
+++ b/t/box001-i
@@ -6,7 +6,7 @@ box B;
 constraints {
   B.ht = 2;
   B.wd = 3;
-  B.nw = (0,0);
+  B.sw = (0,0);
 }
 
 
diff --git a/t/labelbox001-i b/t/labelbox001-i
index 1a59e83..a7113c8 100644
--- a/t/labelbox001-i
+++ b/t/labelbox001-i
@@ -4,7 +4,7 @@ require "labelbox";
 labelbox L(text="fooey");
 
 constraints {
-        L.nw = (2,3);
+        L.sw = (2,3);
         L.wd = 4;
         L.ht = 5;
 }
diff --git a/t/labelbox002-i b/t/labelbox002-i
index 127bffe..d7e34bc 100644
--- a/t/labelbox002-i
+++ b/t/labelbox002-i
@@ -16,7 +16,7 @@ define labelbox extends box {
 labelbox L(text="fooey");
 
 constraints {
-        L.nw = (2,3);
+        L.sw = (2,3);
         L.wd = 4;
         L.ht = 5;
 }
diff --git a/t/labelbox003-i b/t/labelbox003-i
index a8350dc..8b03db4 100644
--- a/t/labelbox003-i
+++ b/t/labelbox003-i
@@ -4,7 +4,7 @@ require "labelbox";
 labelbox L(label.text="fooey");
 
 constraints {
-        L.nw = (2,3);
+        L.sw = (2,3);
         L.wd = 4;
         L.ht = 5;
 }