diff --git a/src/graphics/graphics.c b/src/graphics/graphics.c
index 8d6fc96..1aad131 100644
--- a/src/graphics/graphics.c
+++ b/src/graphics/graphics.c
@@ -182,7 +182,7 @@ void graphics_write_line (GLuint a, GLuint b, int print)
     buffer_lines_origin[buffer_lines_size + 0] = a;
     buffer_lines_origin[buffer_lines_size + 1] = b;
 
-    if (print) printf("In graphics_write_line()   buffer_lines_size  => [%2d] [%2d > %2d]      (%3u  > %3u )   (= buffer_vertex_size / 3 - 2 > -1)\n",\
+    if (print) printf("In graphics_write_line()   buffer_lines_size  => [%2d] [%2d > %2d]      (%3u  > %3u )\n\n",\
                   buffer_lines_size / 2, buffer_lines_size + 0, buffer_lines_size + 1, a, b);
 
     buffer_lines_size += 2;
@@ -562,7 +562,7 @@ static int rewrite_arrow (int arrows_nb, int address, int load, int site, int x,
 {
     arrows_ptr[address].load = load;
 
-    print_arrows_array (arrows_ptr, arrows_nb, 2);
+    if (0) print_arrows_array (arrows_ptr, arrows_nb, 2);
 
     return arrows_nb;
 }
@@ -597,7 +597,7 @@ static inline int create_arrow (int arrows_nb,
 
     arrows_nb ++;
 
-    if (1) print_arrows_array (arrows_ptr, arrows_nb, 1);
+    if (0) print_arrows_array (arrows_ptr, arrows_nb, 1);
 
     return arrows_nb;
 }
@@ -646,7 +646,7 @@ static inline int erase_arrow (int arrows_nb, int address, int site, int x, int
     }
 
     printf("    >>    bf_vrtx = %d    bf_ln = %d\n",    (buffer_vertex_size - 6) / 3, (buffer_lines_size - 4) / 2);
-    print_arrows_array (arrows_ptr, arrows_nb,0);
+    if (0) print_arrows_array (arrows_ptr, arrows_nb, 0);
 
     return arrows_nb;
 }
@@ -903,19 +903,20 @@ void  __attribute__((optimize("no-unroll-loops"))) main_test_graphics (void)
                                0,//rand() % space_Y,    //    y
                                0);//rand() % space_Z);   //    z
 
-    int address = 0;
+    int address = 3;
 
     if (1) printf("buffer_lines_0_arrow  = %d   address = %d   buffer_lines_size  = %d   >>>", buffer_lines_0_arrow, address, buffer_lines_size);
-    /* buffer_lines_origin [(long) buffer_lines_0_arrow + address * 2 + 0] = buffer_lines_origin[(long) buffer_lines_size - 2]; */
-    /* buffer_lines_origin [(long) buffer_lines_0_arrow + address * 2 + 1] = buffer_lines_origin[(long) buffer_lines_size - 1]; */
+    buffer_lines_origin [(long) buffer_lines_0_arrow + address * 2 + 0] = buffer_lines_origin[(long) buffer_lines_size - 2];
+    buffer_lines_origin [(long) buffer_lines_0_arrow + address * 2 + 1] = buffer_lines_origin[(long) buffer_lines_size - 1];
 
-    /* buffer_lines_size -= 2; */
+    buffer_lines_size -= 2;
 
     void *new_arrows_lines_ptr = g_realloc(buffer_lines_origin, buffer_lines_size * sizeof(GLfloat));
     if (new_arrows_lines_ptr) buffer_lines_origin = new_arrows_lines_ptr;
     else                       perror("In experience, can't re_allocate for arrow lines buffer.\n");
     if (1) printf(">>>   buffer_lines_size = %d\n", buffer_lines_size);
 
+
     if (1) printf("buffer_vertex_0_arrow = %d   address = %d   buffer_vertex_size = %d   >>>", buffer_vertex_0_arrow, address, buffer_vertex_size);
     buffer_vertex_origin [(long) buffer_vertex_0_arrow + address * 6 + 0] = buffer_vertex_origin[(long) buffer_vertex_size - 6];
     buffer_vertex_origin [(long) buffer_vertex_0_arrow + address * 6 + 1] = buffer_vertex_origin[(long) buffer_vertex_size - 5];
@@ -1017,4 +1018,3 @@ void  __attribute__((optimize("no-unroll-loops"))) main_test_graphics (void)
     arrows_ptr = NULL;
     arrows_nb = 0;
 }
-