diff --git a/firmware/l0dable/EXPORTS b/firmware/l0dable/EXPORTS
index c74165a..42a8b76 100644
--- a/firmware/l0dable/EXPORTS
+++ b/firmware/l0dable/EXPORTS
@@ -113,3 +113,5 @@ o_close
 o_set_gray
 o_fill
 o_set_shader
+o_identity
+o_transform
diff --git a/firmware/l0dable/rockets.c b/firmware/l0dable/rockets.c
index 0d42500..6697ca3 100644
--- a/firmware/l0dable/rockets.c
+++ b/firmware/l0dable/rockets.c
@@ -3,23 +3,25 @@
 #include "lcd/lcd.h"
 #include "usetable.h"
 
-#define SPP 10
-
 static void draw_rakett (int x, int y, int scale, int angle);
+static int my_gray (int x, int y, void *data);
 
 void ram (void) {
-    char test[384]; /* scratch space */
+    char test[512]; /* scratch space */
     o_init (test, sizeof(test));
     int frame_no = 0;
     int frame_dir = 1;
-    while (1) {
+    o_set_shader (my_gray, NULL);
+    while (getInputRaw() != BTN_ENTER){
+      o_identity ();
       o_rectangle (0,0,RESX, RESY);
-      o_set_gray (1000);
+      o_set_gray (250);
       o_fill ();     /* fill with 50% gray */
 
-      draw_rakett (40, 20, frame_no / 3,  150*frame_no);
-      draw_rakett (20, 20, frame_no,  10*frame_no);
-      draw_rakett (80, 30, 1000-frame_no,  450+14*frame_no);
+      draw_rakett (40, 20, 400,  300);
+      draw_rakett (20, 20, 250,  10*frame_no);
+      draw_rakett (80, 30, 350,  450+14*frame_no);
+
       frame_no += frame_dir;
       lcdDisplay();
       delayms(2);
@@ -29,18 +31,7 @@ void ram (void) {
     }
 }
 
-static signed char rakett[] = {
-  ' ',
-  'm',38,6,
-  'c',38,6,36,13,36,15,
-  'c',24,22,23,26,21,32,'c',19,41,23,61,23,61,'c',15,73,14,95,17,110,'l',26,109,'c',26,102,26,87,30,83,'c',30,83,30,88,30,95,'c',31,103,31,108,31,108,'l',36,108,'c',36,108,35,98,36,91,'c',37,83,38,80,38,80,'c',41,79,43,80,47,79,'c',56,85,56,89,58,99,'c',58,103,58,108,58,108,'l',68,108,'c',67,89,69,73,54,58,'c',54,58,56,41,53,31,'c',50,21,40,15,40,15,'l',38,6,'z','g',0,'f',
-  ' ',
-  'm',33,20,'c',31,20,29,21,27,22,'c',25,24,23,27,22,29,'c',20,35,21,38,21,38,'c',26,38,29,36,34,33,'c',38,31,42,24,34,21,'c',34,21,33,20,33,20,'z','g', 50,'f','.'
-};
-
-#define GRAY_PRECISION     4
-/* Default color generator shader */
-static int shader_gray (int x, int y, void *data)
+static int my_gray (int x, int y, void *data)
 {
   int value = (int)(data); /* stored gray value as 8bit value */
   switch (value)           /* the dither patterns are can be seen */
@@ -82,26 +73,34 @@ static int shader_gray (int x, int y, void *data)
   return 0;
 }
 
-static const signed char * o_process_op (const signed char *g,
-                                         int scale,
-                                         int x,
-                                         int y)
+
+static signed char rakett[] = {
+  ' ',
+  'm',38,6,
+  'c',38,6,36,13,36,15,
+  'c',24,22,23,26,21,32,'c',19,41,23,61,23,61,'c',15,73,14,95,17,110,'l',26,109,'c',26,102,26,87,30,83,'c',30,83,30,88,30,95,'c',31,103,31,108,31,108,'l',36,108,'c',36,108,35,98,36,91,'c',37,83,38,80,38,80,'c',41,79,43,80,47,79,'c',56,85,56,89,58,99,'c',58,103,58,108,58,108,'l',68,108,'c',67,89,69,73,54,58,'c',54,58,56,41,53,31,'c',50,21,40,15,40,15,'l',38,6,'z','g',0,'f','g',100,'s',
+  ' ',
+  'm',33,20,'c',31,20,29,21,27,22,'c',25,24,23,27,22,29,'c',20,35,21,38,21,38,'c',26,38,29,36,34,33,'c',38,31,42,24,34,21,'c',34,21,33,20,33,20,'z','g', 50,'f','.'
+};
+
+static const signed char * o_process_op (const signed char *g)
 {
-  scale *= SPP;
   switch (*g++) {
 
     case ' ': o_path_new (); break;
     /* all of these path commands are directly in integer coordinates */
     case 'm':
-      o_move_to  (g[0]*scale/1000+x, g[1]*scale/1000+y); g += 2;
+      o_move_to  (g[0], g[1]); g += 2;
 break;
-    case 'l': o_line_to  (g[0]*scale/1000+x, g[1]*scale/1000+y); g += 2; break;
-    case 'c': o_curve_to (g[0]*scale/1000+x, g[1]*scale/1000+y, g[2]*scale/1000+x, g[3]*scale/1000+y, g[4]*scale/1000+x, g[5]*scale/1000+y); g += 6; break;
+    case 'l': o_line_to  (g[0], g[1]); g += 2; break;
+    case 'c': o_curve_to (g[0], g[1], g[2], g[3], g[4], g[5]); g += 6; break;
     case 'z': o_close (); break;
 
     case 'g': o_set_gray (g[0]*10); g ++; break;
 
     case 'f': o_fill (); break;
+    case 's': break;
+    //case 's': o_stroke (); break;
               /* 1 = 1 10 = 10 100 = 100 */
 #if 0
     case '!': o_identity (); break;
@@ -121,20 +120,14 @@ break;
 }
 
 static void
-orender (const signed char *g, int scale, int x, int y)
+orender (const signed char *g)
 {
-  o_set_shader (shader_gray, NULL);
-  for (; g; g = o_process_op (g, scale, x, y));
+  for (; g; g = o_process_op (g));
 }
 
-
 void o_rectangle (int x0, int y0, int width, int height)
 {
   o_path_new ();
-  x0*=SPP;
-  y0*=SPP;
-  width*=SPP;
-  height*=SPP;
   o_move_to (x0, y0);
   o_line_to (x0 + width, y0);
   o_line_to (x0 + width, y0+height);
@@ -144,12 +137,13 @@ void o_rectangle (int x0, int y0, int width, int height)
 
 void draw_rakett (int x, int y, int scale, int angle)
 {
-  //o_save ();
-  //o_identity (); /* reset transform stack */
-  //o_translate(x * 1000, y * 1000);
-  //o_rotate (angle);
-  //o_scale (scale, scale);
-  //o_translate (-37000, -60000);
-  orender (rakett, scale, x, y);  /* render a rocket */
-  //o_restore ();
+  OMatrix m={{{scale,0},{0,scale},{x * 6000,y * 6000}}};
+  o_identity (); /* reset transform stack */
+  /*
+  o_translate(x * 1000 , y * 1000 );
+  o_rotate (angle);
+  o_scale (scale, scale);
+  o_translate (-37000, -60000);*/
+  o_transform (&m, 0);
+  orender (rakett);  /* render a rocket */
 }
diff --git a/firmware/lcd/o.c b/firmware/lcd/o.c
index 33a1933..ceef2f0 100644
--- a/firmware/lcd/o.c
+++ b/firmware/lcd/o.c
@@ -35,7 +35,7 @@
  */
 
 #define O_ENABLE_FILL
-//#define O_ENABLE_STROKE
+#define O_ENABLE_STROKE
 #define O_ENABLE_USER_SHADER
 #define O_ENABLE_BW   /* pick one ,. */
 //#define O_ENABLE_GRAY
@@ -43,7 +43,7 @@
 //#define O_ENABLE_RECTANGLE
 //#define O_ENABLE_STACK
 //#define O_ENABLE_CLIP
-//#define O_ENABLE_TRANSFORM
+#define O_ENABLE_TRANSFORM
 //#define O_ENABLE_TRANSFORM_FUNCS
 //#define O_ENABLE_RENDER
 //#define O_ENABLE_TEXT
@@ -256,8 +256,8 @@ o_translate (int tx, int ty)
   OMatrix *m = &context()->transform;
   o_matrix_identity (&t);
 
-  t.m[2][0] = tx * FIXED_ONE / 1000;
-  t.m[2][1] = ty * FIXED_ONE / 1000;
+  t.m[2][0] = tx * SPP * FIXED_ONE / 1000;
+  t.m[2][1] = ty * SPP * FIXED_ONE / 1000;
   o_matrix_multiply (m, &t, m);
 }
 
@@ -273,29 +273,6 @@ o_scale (int sx, int sy)
 }
 
 
-static int o_sin(int x)
-{
-#define qN 13
-#define qA 12
-#define qP 15
-#define qR (2*qN-qP)
-#define qS (qN+qP+1-qA)
-
-    x= x<<(30-qN);          // shift to full s32 range (Q13->Q30)
-
-    if( (x^(x<<1)) < 0)     // test for quadrant 1 or 2
-        x= (1<<31) - x;
-
-    x= x>>(30-qN);
-
-    return (x * ( (3<<qP) - (x*x>>qR) ) >> qS );
-}
-
-static inline int o_cos(int x)
-{
-  return o_sin(x + 8192);
-}
-
 void
 o_rotate (int angle)
 {
@@ -370,8 +347,8 @@ bezier (Node **curve,
 
 void o_current_point (int *x, int *y)
 {
-  if (x) *x = path->x;
-  if (y) *y = path->y;
+  if (x) *x = path->x / SPP;
+  if (y) *y = path->y / SPP;
 }
 
 #ifdef O_ENABLE_STACK
@@ -411,7 +388,7 @@ o_add (unsigned char type,
 {
   Node *iter = NULL;
 
-#if 0
+#if 1
   if (type != 'A')
     {
       x *= SPP;
@@ -479,8 +456,8 @@ static int shader_gray (int x, int y, void *data)
 }
 #endif
 
-#ifdef O_ENABLE_GRAY_EXTRA
-#define GRAY_PRECISION     8
+#ifdef O_ENABLE_GRAY
+#define GRAY_PRECISION     4
 /* Default color generator shader */
 static int shader_gray (int x, int y, void *data)
 {
@@ -493,8 +470,8 @@ static int shader_gray (int x, int y, void *data)
 }
 #endif
 
-#ifdef O_ENABLE_GRAY
-#define GRAY_PRECISION     4
+#ifdef O_ENABLE_GRAY_EXTRA
+#define GRAY_PRECISION     8
 /* Default color generator shader */
 static int shader_gray (int x, int y, void *data)
 {