diff --git a/examples/dxPtexViewer/dxPtexViewer.cpp b/examples/dxPtexViewer/dxPtexViewer.cpp
index 177b3a3a..66dd80ca 100644
--- a/examples/dxPtexViewer/dxPtexViewer.cpp
+++ b/examples/dxPtexViewer/dxPtexViewer.cpp
@@ -1403,8 +1403,8 @@ initHUD() {
                       450, 10, callbackCheckBox, HUD_CB_ANIMATE_VERTICES, 'm');
     g_hud->AddCheckBox("Screen space LOD (V)",  g_screenSpaceTess,
                       450, 30, callbackCheckBox, HUD_CB_VIEW_LOD, 'v');
-    //g_hud->AddCheckBox("Fractional spacing (T)",  g_fractionalSpacing,
-    //                  450, 50, callbackCheckBox, HUD_CB_FRACTIONAL_SPACING, 't');
+    g_hud->AddCheckBox("Fractional spacing (T)",  g_fractionalSpacing,
+                      450, 50, callbackCheckBox, HUD_CB_FRACTIONAL_SPACING, 't');
     g_hud->AddCheckBox("Frustum Patch Culling (B)",  g_patchCull,
                       450, 70, callbackCheckBox, HUD_CB_PATCH_CULL, 'b');
     g_hud->AddCheckBox("Freeze (spc)", g_freeze,
diff --git a/examples/dxViewer/dxviewer.cpp b/examples/dxViewer/dxviewer.cpp
index 7c78619b..f61b42eb 100644
--- a/examples/dxViewer/dxviewer.cpp
+++ b/examples/dxViewer/dxviewer.cpp
@@ -1213,9 +1213,9 @@ initHUD() {
     g_hud->AddCheckBox("Screen space LOD (V)", g_screenSpaceTess != 0,
                        10, y, callbackCheckBox, kHUD_CB_VIEW_LOD, 'V');
     y += 20;
-    //g_hud->AddCheckBox("Fractional spacing (T)", g_fractionalSpacing != 0,
-    //                   10, y, callbackCheckBox, kHUD_CB_FRACTIONAL_SPACING, 'T');
-    //y += 20;
+    g_hud->AddCheckBox("Fractional spacing (T)", g_fractionalSpacing != 0,
+                       10, y, callbackCheckBox, kHUD_CB_FRACTIONAL_SPACING, 'T');
+    y += 20;
     g_hud->AddCheckBox("Frustum Patch Culling (B)", g_patchCull != 0,
                        10, y, callbackCheckBox, kHUD_CB_PATCH_CULL, 'B');
     y += 20;
diff --git a/examples/glPtexViewer/glPtexViewer.cpp b/examples/glPtexViewer/glPtexViewer.cpp
index 7b142c22..c4ba3380 100644
--- a/examples/glPtexViewer/glPtexViewer.cpp
+++ b/examples/glPtexViewer/glPtexViewer.cpp
@@ -1879,8 +1879,8 @@ int main(int argc, char ** argv) {
                       10, 30, callbackCheckBox, HUD_CB_ANIMATE_VERTICES, 'm');
     g_hud.AddCheckBox("Screen space LOD (V)",  g_screenSpaceTess,
                       10, 50, callbackCheckBox, HUD_CB_VIEW_LOD, 'v');
-    //g_hud.AddCheckBox("Fractional spacing (T)",  g_fractionalSpacing,
-    //                  10, 70, callbackCheckBox, HUD_CB_FRACTIONAL_SPACING, 't');
+    g_hud.AddCheckBox("Fractional spacing (T)",  g_fractionalSpacing,
+                      10, 70, callbackCheckBox, HUD_CB_FRACTIONAL_SPACING, 't');
     g_hud.AddCheckBox("Frustum Patch Culling (B)",  g_patchCull,
                       10, 90, callbackCheckBox, HUD_CB_PATCH_CULL, 'b');
     g_hud.AddCheckBox("Bloom (Y)", g_bloom,
diff --git a/examples/glViewer/glViewer.cpp b/examples/glViewer/glViewer.cpp
index 64459114..5b91bedc 100644
--- a/examples/glViewer/glViewer.cpp
+++ b/examples/glViewer/glViewer.cpp
@@ -1461,9 +1461,9 @@ initHUD() {
     g_hud.AddCheckBox("Screen space LOD (V)",  g_screenSpaceTess != 0,
                       10, y, callbackCheckBox, kHUD_CB_VIEW_LOD, 'v');
     y += 20;
-    //g_hud.AddCheckBox("Fractional spacing (T)",  g_fractionalSpacing != 0,
-    //                  10, y, callbackCheckBox, kHUD_CB_FRACTIONAL_SPACING, 't');
-    //y += 20;
+    g_hud.AddCheckBox("Fractional spacing (T)",  g_fractionalSpacing != 0,
+                      10, y, callbackCheckBox, kHUD_CB_FRACTIONAL_SPACING, 't');
+    y += 20;
     g_hud.AddCheckBox("Frustum Patch Culling (B)",  g_patchCull != 0,
                       10, y, callbackCheckBox, kHUD_CB_PATCH_CULL, 'b');
     y += 20;