diff --git a/Fraktalism/.gitignore b/Fraktalism/.gitignore
index dcb02ee..9d5e8ce 100644
--- a/Fraktalism/.gitignore
+++ b/Fraktalism/.gitignore
@@ -6,6 +6,7 @@ mkmandel
 voxelize
 evolvopick
 henon
+mkhenon
 essai
 plotcolmap
 
diff --git a/Fraktalism/Makefile b/Fraktalism/Makefile
index d0520f6..38308e2 100644
--- a/Fraktalism/Makefile
+++ b/Fraktalism/Makefile
@@ -49,6 +49,11 @@ xjulia.pnm:	mkjulia Makefile
 henon:		henon.f90 Makefile $(OBJDEP)
 	gfortran $(GFOPT) $<  $(OBJS)    -o $@
 
+mkhenon:	mkhenon.f90 Makefile $(OBJDEP)
+	gfortran $(GFOPT) $<  $(OBJS)    -o $@
+
+# ---------------------------------------------
+
 pickover:	pickover.f90 Makefile $(OBJDEP) 
 	gfortran $(GFOPT) $<  $(OBJS)   -o $@
 
diff --git a/Fraktalism/README.md b/Fraktalism/README.md
index 18fd135..a294ef9 100644
--- a/Fraktalism/README.md
+++ b/Fraktalism/README.md
@@ -8,12 +8,17 @@ qui montre ma première expérience dans ce domaine.
 
 ## Trucs à voir
 
-La fractale de Julia se porte plutôt bien. 
+La fractale de Julia se porte plutôt bien, mais les travaux continuent.
 
 * [mkjuliagif.sh](mkjuliagif.sh) : fabrication de la gif animée
 * [julias.f90](julias.f90) : fonctions de dessin d'une Julia 
 * [mkjulia.f90](mkjulia.f90) : le programme principal
 
+**Q:** pourquoi faire la boucle en shell plutôt qu'en Fortran ?
+
+**A:** Parce que je peux recompiler le binaire `mkjulia` pendant le
+déroulement de la boucle, une manière comme une autre de faire
+du *livecoding*.
 
 ## La technique
 
diff --git a/Fraktalism/encode.sh b/Fraktalism/encode.sh
index 164f246..381871b 100755
--- a/Fraktalism/encode.sh
+++ b/Fraktalism/encode.sh
@@ -36,7 +36,7 @@ TITLE='---{ experimental }---'
 
 ffmpeg  -nostdin					\
 	-loglevel warning				\
-	-y -r 30 -f image2 -i $SDIR/%05d.pnm 		\
+	-y -r 30 -f image2 -i $SDIR/%05d.png 		\
 	-metadata artist='---{ tTh }---'		\
 	-metadata title="${TITLE}"			\
  	-preset veryslow				\
diff --git a/Fraktalism/fraktals.f90 b/Fraktalism/fraktals.f90
index 688fac7..f3dd9b9 100644
--- a/Fraktalism/fraktals.f90
+++ b/Fraktalism/fraktals.f90
@@ -137,6 +137,7 @@ subroutine interp4dp (ina, inb, out, dpk)
 
 end subroutine
 !-----------------------------------------------------------
+!-
 
 function dist0 (x, y)
   implicit none
@@ -146,6 +147,8 @@ function dist0 (x, y)
 end function
 
 !-----------------------------------------------------------
+!-
+
 function modulus2(pt)
   implicit none
   complex, intent(in)    ::   pt
diff --git a/Fraktalism/henon.f90 b/Fraktalism/henon.f90
index bc663db..6e5983f 100644
--- a/Fraktalism/henon.f90
+++ b/Fraktalism/henon.f90
@@ -1,31 +1,10 @@
-program henon
+module henon
 
   implicit none
-
-  integer                      :: passe
-  double precision             :: vx, vy
-
-  integer                      :: w, h
-  integer                      :: foo, bar
-  double precision             :: px, py
-  w = 2000   ;   h = 1600
-
-  write(0, *) "###### Mapping of Henon "
-
-  do foo=1, 16
-    px = dble(foo) / 16.0
-    do bar=1,16
-      py = dble(bar) / 16.0
-      call compute_pixel_henon(px, py, 1700,    &
-                           passe, dble(0.5), vx, vy)
-      write(0, fmt=*) "passe ", passe, vx, vy
-    enddo
-  end do
+  contains
 
 !-----------------------------------------------------
-contains
-!-----------------------------------------------------
-!-----------------------------------------------------
+
 subroutine compute_pixel_henon(a, b, maxpasse, passe, limit, rx, ry)
   implicit none
   double precision, intent(in)         :: a, b, limit
@@ -62,5 +41,5 @@ end subroutine
 
 !-----------------------------------------------------
 
-end program
+end module
 
diff --git a/Fraktalism/julias.f90 b/Fraktalism/julias.f90
index f95c73d..de9fde7 100644
--- a/Fraktalism/julias.f90
+++ b/Fraktalism/julias.f90
@@ -1,5 +1,6 @@
 module julias
 
+  use fraktals
   implicit none
   contains
 
@@ -50,31 +51,40 @@ subroutine simple_julia(pic, cx, cy, maxiter)
 
 end subroutine simple_julia
 !===============================================================
-
-subroutine julia_colormapped(pic, cx, cy, maxiter)
+!-
+!	this code is nor really finished
+!-
+subroutine julia_colormapped(pic, cx, cy, mag, maxiter)
     use pixrgb
     type(t_pixrgb), intent(inout), dimension (:,:)  ::  pic
-    real, intent(in)                                ::  cx, cy
+    real, intent(in)                                ::  cx, cy, mag
     integer, intent(in)                             ::  maxiter
 
-    integer      ::  ix, iy, width, height
-    real         ::  fx, fy
+    integer      ::  ix, iy, width, height, iter
+    real         ::  fx, fy, div, off
     complex      ::  Z, C
-    integer      ::  iter
     logical      ::  over_iter
+    integer      ::  under, over
+
+    pic = t_pixrgb(0, 0, 0)
 
     width  = ubound(pic, 1)
     height = ubound(pic, 2)
     C = complex(cx, cy)
+
+    div = mag * 10.0    ;     off = mag * 2.5
+    under = 0          ;     over = 0
+    print *, "mag:", mag, " -> ", div, off
+
     ! print *, "Color julia, const = ", C
     do ix = 1, width
-      fx = (float(ix) / (float(width*2)/10.0) - 2.5)
+      fx = (float(ix) / (float(width*2)/div) - off)
       do iy = 1, height
-        fy = (float(iy) / (float(height*2)/10.0) - 2.5)
+        fy = (float(iy) / (float(height*2)/div) - off)
           ! ------ traitement du pixel
           iter = 0  ; over_iter = .FALSE.
           Z = complex(fx, fy)
-          do while ((real(Z)*real(Z) + imag(Z)*imag(Z)) .LT. 4.0) 
+          do while ((real(Z)*real(Z) + (imag(Z)*imag(Z))) .LT. 4.0) 
             Z = (Z * Z) + C
             iter = iter + 1
             if (iter .GE. maxiter) then
@@ -83,17 +93,22 @@ subroutine julia_colormapped(pic, cx, cy, maxiter)
             endif
           end do
           if (over_iter) then
-            pic(ix, iy)%r = 0
-            pic(ix, iy)%g = mod(abs(int(real(Z) *140)), 255)
-            pic(ix, iy)%b = mod(abs(int(aimag(Z)*140)), 255)
+            pic(ix, iy)%r = mod(int(modulus2(Z)*2000.0), 255)
+            pic(ix, iy)%g = mod(abs(int(real(Z) *11.0)), 255)
+            pic(ix, iy)%b = mod(abs(int(aimag(Z)*11.0)), 255)
+            print *, ix, iy, Z, modulus2(Z)
+            over = over + 1
           else
-            pic(ix, iy)%r = mod(iter*22, 255)
-            pic(ix, iy)%g = mod(iter*59, 255)
-            pic(ix, iy)%b = mod(iter*21, 255)
+            pic(ix, iy)%r = mod(iter*11, 255)
+            pic(ix, iy)%g = mod(iter*14, 255)
+            pic(ix, iy)%b = mod(iter*17, 255)
+            under = under + 1
           endif
       enddo      ! iy
     enddo        ! ix
 
+    print *, "under", under, "over", over
+
 end subroutine 
 !===============================================================
 end module
diff --git a/Fraktalism/mkhenon.f90 b/Fraktalism/mkhenon.f90
new file mode 100644
index 0000000..960e3d3
--- /dev/null
+++ b/Fraktalism/mkhenon.f90
@@ -0,0 +1,27 @@
+program henon
+
+    use PIXRGB
+
+    implicit none
+
+    type(t_pixrgb), allocatable     ::    picz(:,:)
+    integer                         ::    argc
+    character(200)                  ::    filename, string
+    real                            ::    cx, cy
+
+    argc = IARGC()
+    if (3 .NE. argc) then
+      STOP ": MKHENON PROGGY NEED 3 PARAMETERS !"
+    endif
+
+    call getarg(1, filename)
+    call getarg(2, string)       ;   read (string, *) cx
+    call getarg(3, string)       ;   read (string, *) cy
+
+    allocate(picz(1280, 1024))
+
+    call rgbpix_spit_as_pnm_8(picz, trim(filename))
+
+!-----------------------------------------------------
+
+end program
diff --git a/Fraktalism/mkjulia.f90 b/Fraktalism/mkjulia.f90
index c689a54..cb88904 100644
--- a/Fraktalism/mkjulia.f90
+++ b/Fraktalism/mkjulia.f90
@@ -26,9 +26,9 @@ program julia
     call getarg(2, string)       ;   read (string, *) cx
     call getarg(3, string)       ;   read (string, *) cy
 
-    allocate(picz(512, 342))
+    allocate(picz(1280, 1024))
 
-    call julia_colormapped(picz, cx, cy, 2500)
+    call julia_colormapped(picz, cx, cy, 0.600, 1000)
     call rgbpix_spit_as_pnm_8(picz, trim(filename))
 
   contains
diff --git a/Fraktalism/mkjuliagif.sh b/Fraktalism/mkjuliagif.sh
index a4d5455..014182e 100755
--- a/Fraktalism/mkjuliagif.sh
+++ b/Fraktalism/mkjuliagif.sh
@@ -3,7 +3,6 @@
 #
 #	build the prog
 #
-
 make mkjulia
 if [ $? -ne 0 ] ; then
 	echo
@@ -11,11 +10,12 @@ if [ $? -ne 0 ] ; then
 	exit 1
 fi
 
-cxa=" -1.5 "
-cya=" -1.0 "
-cxb="  1.1 "
-cyb="  2.1 "
-nbi=" 180 "
+cxa=" -1.5432 "	;	cya=" -0.8999 "
+cxb="  1.0975 "	;	cyb="  1.5091 "
+nbi=" 2000 "
+tmpimg="/dev/shm/juliatmp.pnm"
+
+rm frames/julia/*
 
 #
 #	run the prog
@@ -23,29 +23,39 @@ nbi=" 180 "
 workdir="frames/julia/"
 for foo in $( seq 0 $(( nbi - 1)) )
 do
-	img=$(printf "%s/%05d.pnm" $workdir $foo)
-
 	Ka=$( echo "$foo / $nbi"			| bc -l)
 	Kb=$( echo "1.0 - $Ka"				| bc -l)
 	# echo $Ka $Kb
 	cx=$(echo "($cxa*$Ka) + ($cxb*$Kb)"		| bc -l)
 	cy=$(echo "$cya*$Ka + $cyb*$Kb"			| bc -l)
 
+	# make mkjulia
+
 	printf "%5d  %4.6f %4.6f     %4.6f  %4.6f\n"		\
 		$foo $Ka $Kb         $cx $cy
-	./mkjulia $img $cx $cy
+	./mkjulia $tmpimg $cx $cy
+	echo
+
+	img=$(printf "%s/%05d.png" $workdir $foo)
+	tcx=$(printf "%8.6f" $cx)
+	tcy=$(printf "%8.6f" $cy)
+
+	convert $tmpimg					\
+		-gravity North-East			\
+		-font Courier-Bold			\
+		-pointsize 20				\
+		-fill Yellow				\
+		-annotate +15+34 $tcx			\
+		-annotate +15+58 $tcy			\
+		-gravity South-East			\
+		-font Courier				\
+		-pointsize 14				\
+		-fill Yellow				\
+		-annotate +10+6 "Konrad+tTh 2024"	\
+		$img
 
 done
 
-mogrify						\
-	-gravity South-East			\
-	-font Courier-Bold			\
-	-pointsize 12				\
-	-fill Black				\
-	-annotate +10+4 "Konrad+tTh 2024"	\
-	"${workdir}/*.pnm"
-
 echo ; echo "Encoding, please wait..."
 
-convert -delay 10 $workdir/*.pnm color-julia.gif
-
+./encode.sh frames/julia/ foo.mp4
diff --git a/GrafAnim/readpicz.f90 b/GrafAnim/readpicz.f90
index 3a72faa..6a13ce4 100644
--- a/GrafAnim/readpicz.f90
+++ b/GrafAnim/readpicz.f90
@@ -35,9 +35,16 @@ program readpicz
       write(0, *) "iostat", errcode
       exit
     endif
-    pix(x+1, y+1)%r = b * 200
-    pix(x+1, y+1)%g = b * 200
-    pix(x+1, y+1)%b = r * 200
+    if (mod(y, 2) .EQ. 1) then
+      pix(x+1, y+1)%r = g * 200
+      pix(x+1, y+1)%g = b * 200
+      pix(x+1, y+1)%b = r * 200
+    else
+      pix(x+1, y+1)%r = g * 200
+      pix(x+1, y+1)%g = r * 200
+      pix(x+1, y+1)%b = b * 200
+    endif
+
   enddo
 
   call rgbpix_spit_as_pnm_16(pix, trim(filename))
diff --git a/Modules/.gitignore b/Modules/.gitignore
index 9c70321..d1eaedc 100644
--- a/Modules/.gitignore
+++ b/Modules/.gitignore
@@ -2,6 +2,7 @@
 chkpixels
 twavm
 trnd
+t_centermag
 
 datas/
 
diff --git a/Modules/centermag.f90 b/Modules/centermag.f90
index bbbf989..7b976d6 100644
--- a/Modules/centermag.f90
+++ b/Modules/centermag.f90
@@ -2,6 +2,11 @@
 module centermag
     implicit none
 !-----------------------------------------------------------------------
+!-
+!   By definition, the default centermax (0, 0, 1) give us a
+!   (-1,-1), (1, 1) box, who is mapped to the screen size.
+!-
+!-----------------------------------------------------------------------
 !      definition of structures
 !-
 type t_centermag
@@ -13,16 +18,30 @@ type t_centermag
 end type
 !-------------------------------------------------------------------
 contains
+!-------------------------------------------------------------------
+subroutine init_centermag(cntmag, w, h, mag)
+    type(t_centermag),intent(out)     :: cntmag
+    integer, intent(in)               :: w, h        ! screen size
+    real, intent(in)                  :: mag
+
+    write(0, *) ">>> init centermag:", w, h
+
+    cntmag%wscr = w   ;   cntmag%hscr = h
+    cntmag%mag = mag
+
+end subroutine
+
 !-------------------------------------------------------------------
 subroutine  print_centermag (cm)
     type(t_centermag), intent(in)   :: cm
 
     print *, "Screen     ", cm%wscr, cm%hscr
     print *, "MagFactor  ", cm%mag
-    print *, "Center     ", cm%cx, cm%cy
+    ! print *, "Center     ", cm%cx, cm%cy
 
 end subroutine
 !-------------------------------------------------------------------
+!-------------------------------------------------------------------
 subroutine  centermag_scr2real (sx, sy, rx, ry)
     integer, intent(in)         ::  sx, sy
     real, intent(out)           ::  rx, ry
diff --git a/Modules/t_centermag.f90 b/Modules/t_centermag.f90
index e2d520d..b0b55a3 100644
--- a/Modules/t_centermag.f90
+++ b/Modules/t_centermag.f90
@@ -1,15 +1,9 @@
 program t
-
   use      centermag
   implicit none
-
   type(t_centermag)      :: cmag
 
-  print *, '====== programme de test ======'
-
-  cmag%wscr = 800
-  cmag%hscr = 600
-
+  print *, '====== programme de test centermag ======'
   call essai_centermag(cmag)
   print *
 
@@ -19,15 +13,13 @@ program t
 contains
 !       --------------
 subroutine essai_centermag(cm)
-    type(t_centermag), intent(in)   :: cm
-
-    real                            :: rx, ry
+    type(t_centermag), intent(inout)   :: cm
+    real                               :: rx, ry
 
+    call init_centermag(cm, 800, 600, 1.0)
     call  print_centermag (cm)
-    print *
 
-    call  centermag_scr2real(1, 1, rx, ry)
-    print *, 'to real  :', rx, ry
+    rx = 0.45   ;    ry = -1.098
 
 end subroutine
 !       --------------
diff --git a/Modules/test-wavm.sh b/Modules/test-wavm.sh
index 44a0610..26df3ae 100755
--- a/Modules/test-wavm.sh
+++ b/Modules/test-wavm.sh
@@ -4,7 +4,7 @@ WAVE="datas/wave.wav"
 
 # sndfile-info ${WAVE}
 
-echo ; echo ; echo
+echo 
 
 wav2text ${WAVE} | ./twavm