diff --git a/drop_billiard.c b/drop_billiard.c
index f0180f5..ae9f302 100644
--- a/drop_billiard.c
+++ b/drop_billiard.c
@@ -8,8 +8,8 @@
 /*  line to nils.berglund@univ-orleans.fr - Thanks!                              */
 /*                                                                               */
 /*  compile with                                                                 */
-/*  gcc -o drop_billiard drop_billiard.c -L/usr/X11R6/lib -ltiff -lm -lGL -lGLU -lX11 -lXmu -lglut                */
-/*  gcc -o drop_billiard drop_billiard.c -O3 -L/usr/X11R6/lib -ltiff -lm -lGL -lGLU -lX11 -lXmu -lglut                */
+/*  gcc -o drop_billiard drop_billiard.c                                         */
+/*  -O3 -L/usr/X11R6/lib -ltiff -lm -lGL -lGLU -lX11 -lXmu -lglut                */
 /*                                                                               */
 /*                                                                               */
 /*  To make a video, set MOVIE to 1 and create subfolder tif_drop                */
@@ -110,8 +110,7 @@
 #define NCOLORS 14          /* number of colors */
 #define COLORSHIFT 3        /* hue of initial color */ 
 #define RAINBOW_COLOR 0     /* set to 1 to use different colors for all particles */
-// #define NSEG 100            /* number of segments of boundary */
-#define NSEG 150            /* _eux */
+#define NSEG 150            /* number of segments of boundary */
 #define BILLIARD_WIDTH 4    /* width of billiard */
 #define FRONT_WIDTH 4       /* width of wave front */
 
@@ -122,7 +121,7 @@
 #define PAINT_EXT 1         /* set to 1 to paint exterior of billiard */
 
 #define PAUSE 1000          /* number of frames after which to pause */
-#define PSLEEP 10           /* sleep time during pause */
+#define PSLEEP 1            /* sleep time during pause */
 #define SLEEP1  1           /* initial sleeping time */
 #define SLEEP2  100         /* final sleeping time */
 #define END_FRAMES 0        /* number of frames at end of movie */
diff --git a/sub_part_billiard.c b/sub_part_billiard.c
index 076878b..832dae0 100644
--- a/sub_part_billiard.c
+++ b/sub_part_billiard.c
@@ -109,8 +109,8 @@ int writetiff(char *filename, char *description, int x, int y, int width, int he
   TIFFSetField(file, TIFFTAG_ROWSPERSTRIP, 1);
   TIFFSetField(file, TIFFTAG_IMAGEDESCRIPTION, description);
   p = image;
-//   for (i = height - 1; i >= 0; i--)
-  for (i = height - 1; i >= 0; i--) // _eux
+
+  for (i = height - 1; i >= 0; i--)
   {
 //     if (TIFFWriteScanline(file, p, height - i - 1, 0) < 0) 
     if (TIFFWriteScanline(file, p, i, 0) < 0) 
@@ -121,7 +121,7 @@ int writetiff(char *filename, char *description, int x, int y, int width, int he
     }
     p += width * sizeof(GLubyte) * 3;
   }
-  free(image); /* _Michale_eux*/
+  free(image); /* prenvents RAM consumption*/
   TIFFClose(file);
   return 0;
 }
@@ -192,14 +192,13 @@ void save_frame()
     strcat(n2, ".tif");
     printf(" saving frame %s \n",n2);
     
-    // mod by _eux - chose one of the following according to the comment beside.
-    // writetiff(n2, "Billiard in an ellipse", 0, 0, WINWIDTH, WINHEIGHT-40, COMPRESSION_LZW);  /* to use with 1080p in drop_billiard.c- probably the best because it's
+    // choose one of the following according to the comment beside.
+    writetiff(n2, "Billiard in an ellipse", 0, 0, WINWIDTH, WINHEIGHT-40, COMPRESSION_LZW);  /* to use with 1080p in drop_billiard.c- probably the best because it's
                                                                                                 // generating 1080p image, lighter, and then cropping those 40 pixels to
                                                                                                 // avoid the strange band*/
     // writetiff(n2, "Billiard in an ellipse", 0, 0, WINWIDTH, WINHEIGHT-50, COMPRESSION_LZW);  // works for 1080p -> "-50px" band!!!
     // writetiff(n2, "Billiard in an ellipse", 0, 0, 1920, 1080-40, COMPRESSION_LZW);           //another perfect 1080p from 1440p in setup
     // writetiff(n2, "Billiard in an ellipse", -WINWIDTH/8+320, -WINHEIGHT/8+180, WINWIDTH-640, WINHEIGHT-400, COMPRESSION_LZW); // perfect 1040p from 1440p in setup
-    writetiff(n2, "Billiard in an ellipse", 0, 0, WINWIDTH, WINHEIGHT-40, COMPRESSION_LZW);        // _Michael_eux
 }
 
 void write_text_fixedwidth( double x, double y, char *st)