diff --git a/apps/chooser/chooser.c b/apps/chooser/chooser.c
index df49185..3d188a9 100644
--- a/apps/chooser/chooser.c
+++ b/apps/chooser/chooser.c
@@ -43,7 +43,7 @@ int main (void)
 
     tinygl_font_set (&font5x7_1);
     tinygl_text_speed_set (MESSAGE_RATE);
-    tinygl_text_mode_set (TINYGL_TEXT_MODE_SCROLL_LEFT);
+    tinygl_text_mode_set (TINYGL_TEXT_MODE_SCROLL);
 
     tinygl_text ("NUM?");
 
diff --git a/apps/fonttest1/fonttest1.c b/apps/fonttest1/fonttest1.c
index 33db503..ac4f3a3 100644
--- a/apps/fonttest1/fonttest1.c
+++ b/apps/fonttest1/fonttest1.c
@@ -37,15 +37,10 @@ static void choose_font (int font_num)
 }
 
 
-static char show_char (int font_num, char ch)
+static char show_char (char ch)
 {
     char string[2];
 
-    if (ch < FONT_FIRST (fonts[font_num]))
-        ch = FONT_LAST (fonts[font_num]);
-    else if (ch > FONT_LAST (fonts[font_num]))
-        ch = FONT_FIRST (fonts[font_num]);
-            
     string[0] = ch;
     string[1] = 0;
     tinygl_text (string);
@@ -68,7 +63,7 @@ int main (void)
     choose_font (font_num);
     tinygl_text_speed_set (10);
 
-    c = show_char (font_num, c);
+    c = show_char (c);
 
     /* Paced loop.  */
     while (1)
@@ -85,17 +80,19 @@ int main (void)
                 font_num = 0;
 
             choose_font (font_num);
-            c = show_char (font_num, c);
+            c = show_char (c);
         }
         else if (navswitch_push_event_p (NAVSWITCH_WEST)
                  || navswitch_push_event_p (NAVSWITCH_SOUTH))
         {
-            c = show_char (font_num, c - 1);
+            if (font_contains_p (fonts[font_num], c - 1))
+                c = show_char (c - 1);
         }
         else if (navswitch_push_event_p (NAVSWITCH_EAST)
                  || navswitch_push_event_p (NAVSWITCH_NORTH))
         {
-            c = show_char (font_num, c + 1);
+            if (font_contains_p (fonts[font_num], c + 1))
+                c = show_char (c + 1);
         }
 
         tinygl_update ();
diff --git a/apps/hello3/hello3.c b/apps/hello3/hello3.c
index aca1cca..3cae5e2 100644
--- a/apps/hello3/hello3.c
+++ b/apps/hello3/hello3.c
@@ -26,7 +26,7 @@ int main (void)
 
     tinygl_font_set (&font5x7_1);
     tinygl_text_speed_set (MESSAGE_RATE);
-    tinygl_text_mode_set (TINYGL_TEXT_MODE_SCROLL_LEFT);
+    tinygl_text_mode_set (TINYGL_TEXT_MODE_SCROLL);
 
     tinygl_text ("HELLO WORLD");
 
diff --git a/apps/hello4/hello4.c b/apps/hello4/hello4.c
index e981028..c76ab4c 100644
--- a/apps/hello4/hello4.c
+++ b/apps/hello4/hello4.c
@@ -48,7 +48,7 @@ int main (void)
             tinygl_text_mode_set (TINYGL_TEXT_MODE_STEP);
 
         if (navswitch_push_event_p (NAVSWITCH_EAST))
-            tinygl_text_mode_set (TINYGL_TEXT_MODE_SCROLL_LEFT);
+            tinygl_text_mode_set (TINYGL_TEXT_MODE_SCROLL);
 
     }
 
diff --git a/apps/ir_grab2/ir_grab2.c b/apps/ir_grab2/ir_grab2.c
index 98c31c7..51aba11 100644
--- a/apps/ir_grab2/ir_grab2.c
+++ b/apps/ir_grab2/ir_grab2.c
@@ -13,7 +13,7 @@
 #include "ir.h"
 #include "delay.h"
 #include "uint8toa.h"
-#include "../fonts/font3x5_1.h"
+#include "../fonts/font3x5_1_r.h"
 
 
 /* Define polling rate in Hz.  */
@@ -111,8 +111,8 @@ int main (void)
 
     system_init ();
     tinygl_init (LOOP_RATE);
-    tinygl_font_set (&font3x5_1);
-    tinygl_text_mode_set (TINYGL_TEXT_MODE_ROTATE_SCROLL_DOWN);
+    tinygl_font_set (&font3x5_1_r);
+    tinygl_text_mode_set (TINYGL_TEXT_MODE_SCROLL);
     tinygl_text_speed_set (MESSAGE_RATE);
 
     navswitch_init ();
diff --git a/apps/ir_serial_test1/ir_serial_test1.c b/apps/ir_serial_test1/ir_serial_test1.c
index aa27c62..fa0f991 100644
--- a/apps/ir_serial_test1/ir_serial_test1.c
+++ b/apps/ir_serial_test1/ir_serial_test1.c
@@ -11,7 +11,7 @@
 #include "tinygl.h"
 #include "pacer.h"
 #include "ir_serial.h"
-#include "../fonts/font3x5_1.h"
+#include "../fonts/font3x5_1_r.h"
 
 
 /* Define polling rate in Hz.  */
@@ -50,9 +50,9 @@ int main (void)
 
     system_init ();
     tinygl_init (LOOP_RATE);
-    tinygl_font_set (&font3x5_1);
+    tinygl_font_set (&font3x5_1_r);
     tinygl_text_speed_set (MESSAGE_RATE);
-    tinygl_text_mode_set (TINYGL_TEXT_MODE_ROTATE_SCROLL_DOWN);
+    tinygl_text_mode_set (TINYGL_TEXT_MODE_SCROLL);
 
     navswitch_init ();
     ir_serial_init ();
diff --git a/apps/space10/space10.c b/apps/space10/space10.c
index a433146..55cdc2b 100644
--- a/apps/space10/space10.c
+++ b/apps/space10/space10.c
@@ -17,7 +17,7 @@
 #include "spacey.h"
 #include "eeprom.h"
 #include "uint8toa.h"
-#include "../fonts/font3x5_1.h"
+#include "../fonts/font3x5_1_r.h"
 
 
 #define VERSION "1.6"
@@ -229,8 +229,8 @@ main (void)
                          &flasher_patterns[FLASH_MODE_ALIEN]);
     
     tinygl_init (LOOP_RATE);
-    tinygl_font_set (&font3x5_1);
-    tinygl_text_mode_set (TINYGL_TEXT_MODE_ROTATE_SCROLL_DOWN);
+    tinygl_font_set (&font3x5_1_r);
+    tinygl_text_mode_set (TINYGL_TEXT_MODE_SCROLL);
     tinygl_text_speed_set (10);
 
     spacey_init (GAME_UPDATE_RATE, TINYGL_WIDTH, TINYGL_HEIGHT, 
diff --git a/apps/space11/space11.c b/apps/space11/space11.c
index a903164..921828d 100644
--- a/apps/space11/space11.c
+++ b/apps/space11/space11.c
@@ -17,7 +17,7 @@
 #include "spacey.h"
 #include "eeprom.h"
 #include "uint8toa.h"
-#include "../fonts/font3x5_1.h"
+#include "../fonts/font3x5_1_r.h"
 
 
 #define VERSION "1.6"
@@ -276,8 +276,8 @@ static void display_task (__unused__ void *data)
         uint8_t i;
 
         tinygl_init (DISPLAY_UPDATE_RATE);
-        tinygl_font_set (&font3x5_1);
-        tinygl_text_mode_set (TINYGL_TEXT_MODE_ROTATE_SCROLL_DOWN);
+        tinygl_font_set (&font3x5_1_r);
+        tinygl_text_mode_set (TINYGL_TEXT_MODE_SCROLL);
         tinygl_text_speed_set (10);
 
         for (i = 0; i < ARRAY_SIZE (flashers); i++)
diff --git a/apps/space12/space12.c b/apps/space12/space12.c
index fd8f7f0..6d8c988 100644
--- a/apps/space12/space12.c
+++ b/apps/space12/space12.c
@@ -17,7 +17,7 @@
 #include "spacey.h"
 #include "eeprom.h"
 #include "uint8toa.h"
-#include "../fonts/font3x5_1.h"
+#include "../fonts/font3x5_1_r.h"
 #include "tweeter.h"
 #include "mmelody.h"
 #include "pio.h"
@@ -343,8 +343,8 @@ static void display_task (__unused__ void *data)
         uint8_t i;
 
         tinygl_init (DISPLAY_TASK_RATE);
-        tinygl_font_set (&font3x5_1);
-        tinygl_text_mode_set (TINYGL_TEXT_MODE_ROTATE_SCROLL_DOWN);
+        tinygl_font_set (&font3x5_1_r);
+        tinygl_text_mode_set (TINYGL_TEXT_MODE_SCROLL);
         tinygl_text_speed_set (10);
 
         for (i = 0; i < ARRAY_SIZE (flashers); i++)
diff --git a/apps/space9/space9.c b/apps/space9/space9.c
index dbeef3d..2517194 100644
--- a/apps/space9/space9.c
+++ b/apps/space9/space9.c
@@ -17,7 +17,7 @@
 #include "spacey.h"
 #include "eeprom.h"
 #include "uint8toa.h"
-#include "../fonts/font3x5_1.h"
+#include "../fonts/font3x5_1_r.h"
 
 
 #define VERSION "1.6"
@@ -240,8 +240,8 @@ main (void)
                          &flasher_patterns[FLASH_MODE_ALIEN]);
     
     tinygl_init (LOOP_RATE);
-    tinygl_font_set (&font3x5_1);
-    tinygl_text_mode_set (TINYGL_TEXT_MODE_ROTATE_SCROLL_DOWN);
+    tinygl_font_set (&font3x5_1_r);
+    tinygl_text_mode_set (TINYGL_TEXT_MODE_SCROLL);
     tinygl_text_speed_set (10);
 
     navswitch_init ();
diff --git a/apps/squeak3/squeak3.c b/apps/squeak3/squeak3.c
index 5804143..eee2f30 100644
--- a/apps/squeak3/squeak3.c
+++ b/apps/squeak3/squeak3.c
@@ -11,7 +11,7 @@
 #include "task.h"
 #include "tweeter.h"
 #include "tinygl.h"
-#include "../fonts/font3x5_1.h"
+#include "../fonts/font3x5_1_r.h"
 
 
 /* Connect piezo tweeter to outermost pins of UCFK4 P1 connector.  */
@@ -77,7 +77,7 @@ static void button_task_init (void)
 static void display_note (void)
 {
     tinygl_clear ();
-    tinygl_draw_string (note_names[note], tinygl_point (0, 0), 1);
+    tinygl_draw_string (note_names[note], tinygl_point (0, 0));
 }
 
 
@@ -122,8 +122,8 @@ static void button_task (__unused__ void *data)
 static void display_task_init (void)
 {
     tinygl_init (DISPLAY_TASK_RATE);
-    tinygl_font_set (&font3x5_1);
-    tinygl_text_mode_set (TINYGL_TEXT_MODE_ROTATE_STEP);
+    tinygl_font_set (&font3x5_1_r);
+    tinygl_text_mode_set (TINYGL_TEXT_MODE_STEP);
 
     display_note ();
 }
diff --git a/apps/squeak4/squeak4.c b/apps/squeak4/squeak4.c
index 3cc1f44..06ce5f3 100644
--- a/apps/squeak4/squeak4.c
+++ b/apps/squeak4/squeak4.c
@@ -11,7 +11,7 @@
 #include "tweeter.h"
 #include "mmelody.h"
 #include "tinygl.h"
-#include "../fonts/font3x5_1.h"
+#include "../fonts/font3x5_1_r.h"
 
 
 /* Connect piezo tweeter to outermost pins of UCFK4 P1 connector.  */
@@ -51,7 +51,7 @@ note_play (tweeter_t tweeter, tweeter_note_t note, uint8_t velocity)
 {
     tinygl_clear ();
     if (note != 0 && velocity != 0)
-        tinygl_draw_string (note_names[note % 12], tinygl_point (0, 0), 1);
+        tinygl_draw_string (note_names[note % 12], tinygl_point (0, 0));
 
     tweeter_note_play (tweeter, note, velocity);
 }
@@ -126,8 +126,8 @@ static void button_task (__unused__ void *data)
 static void display_task_init (void)
 {
     tinygl_init (DISPLAY_TASK_RATE);
-    tinygl_font_set (&font3x5_1);
-    tinygl_text_mode_set (TINYGL_TEXT_MODE_ROTATE_STEP);
+    tinygl_font_set (&font3x5_1_r);
+    tinygl_text_mode_set (TINYGL_TEXT_MODE_STEP);
 }
 
 
diff --git a/apps/task2/task2.c b/apps/task2/task2.c
index 6de0409..3aea31c 100644
--- a/apps/task2/task2.c
+++ b/apps/task2/task2.c
@@ -39,7 +39,7 @@ static void display_task_init (void)
     tinygl_init (DISPLAY_TASK_RATE);
     tinygl_font_set (&font5x7_1);
     tinygl_text_speed_set (MESSAGE_RATE);
-    tinygl_text_mode_set (TINYGL_TEXT_MODE_SCROLL_LEFT);
+    tinygl_text_mode_set (TINYGL_TEXT_MODE_SCROLL);
     
     tinygl_text ("HELLO WORLD ");
 }
diff --git a/utils/tinygl.c b/utils/tinygl.c
index 07d6eab..5cbfcec 100644
--- a/utils/tinygl.c
+++ b/utils/tinygl.c
@@ -131,34 +131,18 @@ static bool tinygl_font_pixel_get (char ch, uint8_t col, uint8_t row)
 
 /** Draw character using current font.
     @param ch character to draw
-    @param offset coordinates of top left position
-    @param rotate non-zero to rotate character.  */
-void tinygl_draw_char (char ch, tinygl_point_t offset, bool rotate)
+    @param offset coordinates of top left position.  */
+void tinygl_draw_char (char ch, tinygl_point_t offset)
 {
     uint8_t x;
     uint8_t y;
 
-    if (rotate)
-    {
-        for (x = 0; x < font->height; x++)
-        {
-            for (y = 0; y < font->width; y++)
-            {
-                tinygl_draw_point (tinygl_point (x + offset.x, 
-                                   TINYGL_HEIGHT - 1 - (y + offset.y)),
-                                   tinygl_font_pixel_get (ch, y, x));
-            }
-        }
-    }
-    else
+    for (x = 0; x < font->width; x++)
     {
-        for (x = 0; x < font->width; x++)
+        for (y = 0; y < font->height; y++)
         {
-            for (y = 0; y < font->height; y++)
-            {
-                tinygl_draw_point (tinygl_point (x + offset.x, y + offset.y),
-                                   tinygl_font_pixel_get (ch, x, y));
-            }
+            tinygl_draw_point (tinygl_point (x + offset.x, y + offset.y),
+                               tinygl_font_pixel_get (ch, x, y));
         }
     }
 }
@@ -168,28 +152,17 @@ void tinygl_draw_char (char ch, tinygl_point_t offset, bool rotate)
 /** Draw string (well, as much as possible) using current font.
     @param str string to draw
     @param offset coordinates of top left position
-    @param rotate non-zero to rotate string
     @return number of whole characters drawn.  */
-uint8_t tinygl_draw_string (const char *str, tinygl_point_t offset, bool rotate)
+uint8_t tinygl_draw_string (const char *str, tinygl_point_t offset)
 {
     uint8_t count = 0;
 
     while (*str)
     {
-        if (rotate)
-        {
-            if (offset.y + font->width > TINYGL_HEIGHT)
-                break;
-            tinygl_draw_char (*str, offset, 1);
-            offset.y += font->width + 1;            
-        }
-        else
-        {
-            if (offset.x + font->width > TINYGL_WIDTH)
-                break;
-            tinygl_draw_char (*str, offset, 0);
-            offset.x += font->width + 1;
-        }
+        if (offset.x + font->width > TINYGL_WIDTH)
+            break;
+        tinygl_draw_char (*str, offset);
+        offset.x += font->width + 1;
         count++;
         str++;
     }
@@ -197,13 +170,11 @@ uint8_t tinygl_draw_string (const char *str, tinygl_point_t offset, bool rotate)
 }
 
 
-
 /** Display a character.
     @param ch character to display
     @return 1 if character fully displayed.  */
 static bool tinygl_display_char (char ch)
 {
-    uint8_t x;
     uint8_t y;
 
     if (!font)
@@ -211,7 +182,7 @@ static bool tinygl_display_char (char ch)
 
     switch (text_mode)
     {
-    case TINYGL_TEXT_MODE_SCROLL_LEFT:
+    case TINYGL_TEXT_MODE_SCROLL:
         display_scroll_left ();
         
         for (y = 0; y < font->height; y++)
@@ -225,27 +196,10 @@ static bool tinygl_display_char (char ch)
         if (scroll_pos != 0)
             break;
 
-        tinygl_draw_char (ch, tinygl_point (0, 0), 0);
-        break;
-
-    case TINYGL_TEXT_MODE_ROTATE_SCROLL_DOWN:
-        display_scroll_down ();
-        
-        for (x = 0; x < font->height; x++)
-        {
-            tinygl_draw_point (tinygl_point (x, 0),
-                               tinygl_font_pixel_get (ch, scroll_pos, x));
-        }
-        break;
-
-    case TINYGL_TEXT_MODE_ROTATE_STEP:
-        if (scroll_pos != 0)
-            break;
-
-        tinygl_draw_char (ch, tinygl_point (0, 0), 1);
+        tinygl_draw_char (ch, tinygl_point (0, 0));
         break;
     }
-        
+
     scroll_pos++;
     if (scroll_pos > font->width)
         scroll_pos = 0;
diff --git a/utils/tinygl.h b/utils/tinygl.h
index 185e50e..0aae922 100644
--- a/utils/tinygl.h
+++ b/utils/tinygl.h
@@ -110,11 +110,7 @@ typedef enum
     /* Stepping text.  */
     TINYGL_TEXT_MODE_STEP, 
     /** Scrolling text.  */
-    TINYGL_TEXT_MODE_SCROLL_LEFT,
-    /** Rotated scrolling text.  */
-    TINYGL_TEXT_MODE_ROTATE_SCROLL_DOWN,
-    /* Stepping rotated text.  */
-    TINYGL_TEXT_MODE_ROTATE_STEP
+    TINYGL_TEXT_MODE_SCROLL
 } tinygl_text_mode_t;
 
 
@@ -152,18 +148,16 @@ void tinygl_font_set (font_t *pfont);
 
 /** Draw character using current font.
     @param ch character to draw
-    @param offset coordinates of top left position
-    @param rotate non-zero to rotate character.  */
-void tinygl_draw_char (char ch, tinygl_point_t offset, bool rotate);
+    @param offset coordinates of top left position.  */
+void tinygl_draw_char (char ch, tinygl_point_t offset);
 
 
 /** Draw string (well, as much as possible) using current font.
     @param str string to draw
     @param offset coordinates of top left position
-    @param rotate non-zero to rotate string
     @return number of whole characters drawn.  */
-uint8_t tinygl_draw_string (const char *str, tinygl_point_t offset,
-                            bool rotate);
+uint8_t tinygl_draw_string (const char *str, tinygl_point_t offset);
+
 
 /** Draw point.
     @param point coordinates of point