diff --git a/ftgl_testing.cc b/ftgl_testing.cc
index 5a7f9b3..f08adef 100644
--- a/ftgl_testing.cc
+++ b/ftgl_testing.cc
@@ -16,7 +16,6 @@ void init(void)
 {
     glViewport(0, 0, WIDTH, HEIGHT);
     glClearColor (0.0, 0.0, 0.0, 0.0);
-    glEnable(GL_DEPTH_TEST);
     glShadeModel(GL_FLAT);
     glMatrixMode(GL_PROJECTION);
     glLoadIdentity();
@@ -33,22 +32,31 @@ void init(void)
 
 void display(SDL_Window * window)
 {
+    float line_height = font->LineHeight();
+    float advance = font->Advance("M");
+    float low = font->BBox("g").Lower().Y();
+    float high = font->BBox("M").Upper().X();
+    float shift = (high + low) / 2.0 - line_height / 2.0;
     glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
     glBegin(GL_QUADS);
-        glVertex3f(2.0, 202.0, 0.0);
-        glVertex3f(2.0, 210.0, 0.0);
-        glVertex3f(10.0, 210.0, 0.0);
-        glVertex3f(10.0, 202.0, 0.0);
+        glColor4f(1.0, 1.0, 0.0, 1.0);
+        glVertex3f(10 + advance * ('J' - 'A'), HEIGHT - line_height * 3 + shift, 0.0);
+        glVertex3f(10 + advance * ('J' - 'A'), HEIGHT - line_height * 2 + shift, 0.0);
+        glVertex3f(10 + advance * ('J' - 'A' + 1), HEIGHT - line_height * 2 + shift, 0.0);
+        glVertex3f(10 + advance * ('J' - 'A' + 1), HEIGHT - line_height * 3 + shift, 0.0);
     glEnd();
-    float line_height = font->LineHeight();
-    font->Render("abcdefghijklmnopqrstuvwxyz", -1, FTPoint(10, HEIGHT - line_height, 0));
-    font->Render("ABCDEFGHIJKLMNOPQRSTUVWXYZ", -1, FTPoint(10, HEIGHT - line_height * 2, 0));
+    glColor4f(1, 1, 1, 1);
+    font->Render("abcdefghijklmnopqrstuvwxyz_", -1, FTPoint(10, HEIGHT - line_height, 0));
+    font->Render("ABCDEFGHIJKLMNOPQRSTUVWXYZ_", -1, FTPoint(10, HEIGHT - line_height * 2, 0));
     for (int i = 0; i < 26; i++)
     {
         char s[2];
         s[0] = 'A' + i;
         s[1] = '\0';
-        float advance = font->Advance("M");
+        if (i == 'J' - 'A')
+            glColor4f(0, 0, 0, 1);
+        else
+            glColor4f(1, 1, 1, 1);
         font->Render(s, -1, FTPoint(10 + advance * i, HEIGHT - line_height * 3, 0));
     }
     font->Render("0123456789", -1, FTPoint(10, HEIGHT - line_height * 4, 0));