diff --git a/redo/osxaltest/button.m b/redo/osxaltest/button.m
index e676c602..a80ebe2a 100644
--- a/redo/osxaltest/button.m
+++ b/redo/osxaltest/button.m
@@ -53,11 +53,11 @@
 			horzpred = predicate;
 	}
 	[p->horz addObject:[NSString stringWithFormat:@"[%@%@]", key, horzpred]];
-	[p->horzAttachLeft addObject:@YES];
-	[p->horzAttachRight addObject:@YES];
+	[p->horzAttachLeft addObject:[NSNumtber numberWithBool:p->horzFirst]];
+	[p->horzAttachRight addObject:[NSNumber numberWithBool:p->horzLast]];
 	[p->vert addObject:[NSString stringWithFormat:@"[%@%@]", key, vertpred]];
-	[p->vertAttachTop addObject:@YES];
-	[p->vertAttachBottom addObject:@YES];
+	[p->vertAttachTop addObject:[NSNumber numberWithBool:p->vertFirst]];
+	[p->vertAttachBottom addObject:[NSNumber numberWithBool:p->vertLast]];
 	[p->views setObject:self->b forKey:key];
 }
 
diff --git a/redo/osxaltest/osxaltest.h b/redo/osxaltest/osxaltest.h
index 76fa7361..e20abeb5 100644
--- a/redo/osxaltest/osxaltest.h
+++ b/redo/osxaltest/osxaltest.h
@@ -8,9 +8,13 @@ struct tAutoLayoutParams {
 	NSMutableArray *horz;
 	NSMutableArray *horzAttachLeft;
 	NSMutableArray *horzAttachRight;
+	BOOL horzFirst;
+	BOOL horzLast;
 	NSMutableArray *vert;
 	NSMutableArray *vertAttachTop;
 	NSMutableArray *vertAttachBottom;
+	BOOL vertFirst;
+	BOOL vertLast;
 	NSMutableDictionary *views;
 	uintmax_t n;
 	BOOL stretchy;
diff --git a/redo/osxaltest/spinbox.m b/redo/osxaltest/spinbox.m
index 949ec974..120ec8fe 100644
--- a/redo/osxaltest/spinbox.m
+++ b/redo/osxaltest/spinbox.m
@@ -95,11 +95,11 @@
 			horzpred = predicate;
 	}
 	[p->horz addObject:[NSString stringWithFormat:@"[%@%@]", key, horzpred]];
-	[p->horzAttachLeft addObject:@YES];
-	[p->horzAttachRight addObject:@YES];
+	[p->horzAttachLeft addObject:[NSNumtber numberWithBool:p->horzFirst]];
+	[p->horzAttachRight addObject:[NSNumber numberWithBool:p->horzLast]];
 	[p->vert addObject:[NSString stringWithFormat:@"[%@%@]", key, vertpred]];
-	[p->vertAttachTop addObject:@YES];
-	[p->vertAttachBottom addObject:@YES];
+	[p->vertAttachTop addObject:[NSNumber numberWithBool:p->vertFirst]];
+	[p->vertAttachBottom addObject:[NSNumber numberWithBool:p->vertLast]];
 	[p->views setObject:self->c forKey:key];
 }
 
diff --git a/redo/osxaltest/window.m b/redo/osxaltest/window.m
index 8816df85..66dcad5a 100644
--- a/redo/osxaltest/window.m
+++ b/redo/osxaltest/window.m
@@ -55,9 +55,13 @@
 	p.horz = [NSMutableArray new];
 	p.horzAttachLeft = [NSMutableArray new];
 	p.horzAttachRight = [NSMutableArray new];
+	p.horzFirst = YES;		// only control here
+	p.horzLast = YES;
 	p.vert = [NSMutableArray new];
 	p.vertAttachTop = [NSMutableArray new];
 	p.vertAttachBottom = [NSMutableArray new];
+	p.vertFirst = YES;
+	p.vertLast = YES;
 	p.views = [NSMutableDictionary new];
 	p.n = 0;
 	[self->c tFillAutoLayout:&p];