diff -urN xlife-6.7.2/colors.c xlife-6.7.3/colors.c
--- xlife-6.7.2/colors.c	2013-03-21 21:19:56.000000000 +0400
+++ xlife-6.7.3/colors.c	2013-08-04 15:10:25.000000000 +0400
@@ -1,6 +1,6 @@
 /*
  * XLife Copyright 2011-13 Vladimir Lidovski vol.litwr@gmail.com
- * $Id: colors.c 168 2013-03-21 17:19:56Z micro $
+ * $Id: colors.c 241 2013-08-04 10:00:07Z micro $
  *
  * Permission to use, copy, modify, distribute, and sell this software and its
  * documentation for any purpose is hereby granted without fee, provided that
@@ -340,7 +340,7 @@
       XChangeGC(disp, cellgc[i], GCForeground, &xgcv);
    }
    XSetWindowBackground(disp, lifew, bcolor);
-   do_expose_lifew();
+   redraw_lifew();
    showstates();
 }
 
@@ -353,6 +353,6 @@
       XChangeGC(disp, cellgc[k], GCForeground, &xgcv);
    }
    XSetWindowBackground(disp, lifew, cellcolor->pixel);
-   do_expose_lifew();
+   redraw_lifew();
    showstates();
 }
diff -urN xlife-6.7.2/defs.h xlife-6.7.3/defs.h
--- xlife-6.7.2/defs.h	2013-06-16 02:25:05.000000000 +0400
+++ xlife-6.7.3/defs.h	2013-08-04 15:10:25.000000000 +0400
@@ -23,7 +23,7 @@
 /*
 A lot of modifications were added at 2001, 2011-13 by Vladimir Lidovski vol.litwr@gmail.com
 (C) This version of XLife may be used under the same conditions as mentioned above
-$Id: defs.h 212 2013-06-15 22:25:05Z micro $
+$Id: defs.h 241 2013-08-04 10:00:07Z micro $
 */
 
 #ifdef __GNUCC__
@@ -91,9 +91,9 @@
 #define STARTY 2147483648U
 
 /* the program's run states */
-#define STOP 	0x0	/* single-stepping */
-#define HIDE	0x1	/* evolving, no per-generation display */
-#define RUN	0x2	/* evolving with per-generation display */
+#define STOP 	0x1	/* single-stepping */
+#define HIDE	0x2	/* evolving, no per-generation display */
+#define RUN	0x4	/* evolving with per-generation display */
 
 /* time-delays for generation evolution */
 #define DELAY_FAST 0
@@ -278,7 +278,7 @@
 void Button(void), Release(void);
 void ResizeLW(int);
 void alloc_states(unsigned, unsigned);
-void do_expose_lifew(void);
+void redraw_lifew(void);
 void fixpatterntopology(void);
 void make_delay(long, long);
 int rules_changed(void);
diff -urN xlife-6.7.2/file.c xlife-6.7.3/file.c
--- xlife-6.7.2/file.c	2013-07-26 14:20:36.000000000 +0400
+++ xlife-6.7.3/file.c	2013-08-04 15:10:25.000000000 +0400
@@ -28,7 +28,7 @@
 /*
 A lot of modifications were added at 2001, 2011-13 by Vladimir Lidovski vol.litwr@gmail.com
 (C) This version of XLife may be used under the same conditions as mentioned above
-$Id: file.c 215 2013-07-26 10:20:36Z micro $
+$Id: file.c 241 2013-08-04 10:00:07Z micro $
 */
 
 /*
@@ -433,7 +433,7 @@
    return 0;
 }
 
-static void err_rules(void) { //uses inpbuf as input data
+static void err_rules(void) { /* uses inpbuf as input data */
    announce_and_wait(RED_EVER);
    if (*pathtorules)
       use_rules(pathtorules, 0);
@@ -1066,10 +1066,8 @@
 int loadfile_req(char *fn) {
    char tmp[PATNAMESIZ], loaddir[PATNAMESIZ];
    LoadReq *loadqueue = 0;
-   int scale_save = scale;
    if (!stashed[0])
       strcpy(stashed, fn);
-   do_expose_lifew();
 /* redefine user load directory (but not pattern library) */
    strcpy(loaddir, fn);
    seppatdir(loaddir, tmp);
@@ -1099,8 +1097,8 @@
       }
       setscale(scale);
    }
-   if (scale_save != scale)
-      XClearWindow(disp, lifew);
+   adjhash(&tentative);
+   redraw_lifew();
    showstates();
    showrules();
    return 1;
diff -urN xlife-6.7.2/framebuffer.c xlife-6.7.3/framebuffer.c
--- xlife-6.7.2/framebuffer.c	2013-06-11 18:25:57.000000000 +0400
+++ xlife-6.7.3/framebuffer.c	2013-08-04 15:10:25.000000000 +0400
@@ -1,6 +1,6 @@
 /*
  * XLife Copyright 2013 Vladimir Lidovski vol.litwr@gmail.com
- * $Id: framebuffer.c 211 2013-06-11 14:25:57Z micro $
+ * $Id: framebuffer.c 237 2013-07-31 10:46:48Z micro $
  *
  * Permission to use, copy, modify, distribute, and sell this software and its
  * documentation for any purpose is hereby granted without fee, provided that
@@ -48,6 +48,7 @@
       if (truehistory && c == 0) return;
 #endif
       p->cur = c;
+      //if (!p->checked || c) p->cur = c;
       p->checked = 1;
    }
 }
@@ -180,3 +181,12 @@
       p->is = 0;
    first = 0;
 }
+
+void fb_flush_rep(void) {
+   register struct FB *p;
+   for (p = first; p; p = p->next)
+      if (p->old)
+         putcell(p, p->old);
+   fb_close(maxstates + 2*(pseudocolor && ev_mode == VALENCE_DRIVEN));
+}
+
diff -urN xlife-6.7.2/framebuffer.h xlife-6.7.3/framebuffer.h
--- xlife-6.7.2/framebuffer.h	2013-06-11 18:25:57.000000000 +0400
+++ xlife-6.7.3/framebuffer.h	2013-08-04 15:10:25.000000000 +0400
@@ -1,6 +1,6 @@
 /*
  * XLife Copyright 2013 Vladimir Lidovski vol.litwr@gmail.com
- * $Id: framebuffer.h 211 2013-06-11 14:25:57Z micro $
+ * $Id: framebuffer.h 237 2013-07-31 10:46:48Z micro $
  *
  * Permission to use, copy, modify, distribute, and sell this software and its
  * documentation for any purpose is hereby granted without fee, provided that
@@ -31,4 +31,6 @@
 void fb_ins(unsigned, unsigned, unsigned);
 void fb_ins_old(unsigned, unsigned, unsigned);
 void fb_flush(void);
+void fb_flush_rep(void);
 void fb_clear(void);
+
diff -urN xlife-6.7.2/generate.c xlife-6.7.3/generate.c
--- xlife-6.7.2/generate.c	2013-06-07 17:44:42.000000000 +0400
+++ xlife-6.7.3/generate.c	2013-08-04 15:10:25.000000000 +0400
@@ -25,7 +25,7 @@
 /*
 A lot of modifications were added at 2001, 2011-13 by Vladimir Lidovski vol.litwr@gmail.com
 (C) This version of XLife may be used under the same conditions as mentioned above
-$Id: generate.c 209 2013-06-07 13:44:42Z micro $
+$Id: generate.c 241 2013-08-04 10:00:07Z micro $
 */
 
 /*
@@ -1467,7 +1467,7 @@
               center();
               if (bounding_box(&active))
                    make_tentative(active.xmin, active.ymin, active.xmax, active.ymax);
-              do_expose_lifew();
+              redraw_lifew();
        }
 }
 
@@ -2234,7 +2234,7 @@
       if ((!memcmp(oscillator_check.cellcount + 1, active.cellcount + 1, maxstates - 1))
             && comparepatterns(&active, &oscillator_check)) {
          state = STOP;
-         do_expose_lifew();
+         redraw_lifew();
          sprintf(inpbuf, "Period-%d oscillator is found", active.generations - oscillator_check.generations);
          announce_and_wait(GREEN_EVER);
          oscillators = 0;
diff -urN xlife-6.7.2/help.c xlife-6.7.3/help.c
--- xlife-6.7.2/help.c	2013-05-28 08:06:55.000000000 +0400
+++ xlife-6.7.3/help.c	2013-08-04 15:10:25.000000000 +0400
@@ -23,7 +23,7 @@
 /*
 A lot of modifications were added at 2001, 2011-13 by Vladimir Lidovski vol.litwr@gmail.com
 (C) This version of XLife may be used under the same conditions as mentioned above
-$Id: help.c 197 2013-05-28 04:06:55Z micro $
+$Id: help.c 239 2013-07-31 17:35:09Z micro $
 */
 
 #include "defs.h"
@@ -169,7 +169,7 @@
                                                                strlen(inpbuf));
    sprintf(inpbuf, "Wireframe tentative pattern mode: %s", yesno(wireframe));
    XDrawString(disp, helpw, itextgc, 10, ++k*FONTHEIGHT, inpbuf,
-                                                               strlen(inpbuf));                                                            
+                                                               strlen(inpbuf));
    sprintf(inpbuf, "Oscillator check mode: %s", yesno(oscillators));
    XDrawString(disp, helpw, itextgc, 10, ++k*FONTHEIGHT, inpbuf,
                                                                strlen(inpbuf));
diff -urN xlife-6.7.2/Imakefile xlife-6.7.3/Imakefile
--- xlife-6.7.2/Imakefile	2013-06-09 23:44:31.000000000 +0400
+++ xlife-6.7.3/Imakefile	2013-08-04 15:10:25.000000000 +0400
@@ -1,5 +1,5 @@
 XCOMM Imakefile for xlife 6.7
-XCOMM tested with various Linuxes (Debian 6, Raspbian, Slackware 14, Mandriva 2010, 
+XCOMM tested with various Linuxes (Debian 7, Raspbian, Slackware 14, Mandriva 2010, 
 XCOMM   ZenWalk 6.4, OpenSUSE 12.3), OpenBSD 5.3, NetBSD 6.1, FreeBSD 9.1, Cygwin NT 5.1
 
 #ifdef CygxVersionMajor
@@ -16,7 +16,7 @@
 
 XLIFEPATSDIR	= xpatsdir_root/patterns
 CCOPTIONS	= -DLIFEDIR=\"$(XLIFEPATSDIR)\" -DHASHBITS=20 -DVFREQ=50
-CDEBUGFLAGS	= -g -O5
+CDEBUGFLAGS	= -O5
 EXTRA_LIBRARIES	= -lm
 DOCDIR		= /usr/share/doc/xlife/
 INSTBINFLAGS	= -m 0755
diff -urN xlife-6.7.2/main.c xlife-6.7.3/main.c
--- xlife-6.7.2/main.c	2013-06-16 02:25:06.000000000 +0400
+++ xlife-6.7.3/main.c	2013-08-04 15:10:25.000000000 +0400
@@ -25,7 +25,7 @@
 /*
  * A lot of modifications were added at 2001, 2011-13 by Vladimir Lidovski vol.litwr@gmail.com
  * (C) This version of XLife may be used under the same conditions as mentioned above
- * $Id: main.c 212 2013-06-15 22:25:05Z micro $
+ * $Id: main.c 241 2013-08-04 10:00:07Z micro $
  */
 
 #include <X11/Xlib.h>
@@ -46,38 +46,32 @@
 #include "topology.h"
 
 /*#define	char	unsigned char*/
-//#include "icon.h"
 #include "icon.h"
 #include "cursor.h"
 /*#undef char*/
 
-extern char *getenv();
-
 #ifndef GRAB_FRACTION
-#define GRAB_FRACTION	0.8	/* fraction of screen to seize */
+#define GRAB_FRACTION	0.8	/* fraction of screen to size */
 #endif /* GRAB_FRACTION */
 
 coord_t savex, savey;	/* last point seen during boxing */
 static coord_t xmarker[3], ymarker[3], linex, liney;
-static int clrscn;
 
-void do_expose_lifew() {
+void redraw_lifew() {
    XClearWindow(disp, lifew);
    pivot = 0;
    fb_clear();
    drawboundedgrid();
-   redisplay(1);
+   redisplay(MESH);
 }
 
 void DoExpose(Window win) {
    if (convmode) return;
    if (win == lifew) {
-      if (clrscn) {
-         do_expose_lifew();
-         clrscn = 0;
-      }
-      else
-         redisplay(1);
+      XClearWindow(disp, lifew);
+      pivot = 0;
+      drawboundedgrid();
+      redisplay(MESH + EXPOSE);
    }
    else if (win == inputw) {
       XClearWindow(disp, inputw);
@@ -311,7 +305,7 @@
       setscale(++scale);
       xpos += SCALE(event.xmotion.x);
       ypos += SCALE(event.xmotion.y);
-      do_expose_lifew();
+      redraw_lifew();
    }
 }
 
@@ -320,7 +314,7 @@
       xpos -= SCALE(event.xmotion.x);
       ypos -= SCALE(event.xmotion.y);
       setscale(--scale);
-      do_expose_lifew();
+      redraw_lifew();
    }
 }
 
@@ -373,8 +367,10 @@
       clipboard_copy(&tentative);
       clipboard.x -= tentative.xmin - STARTX;
       clipboard.y -= tentative.ymin - STARTY;
+      if (!wireframe) boxpattern(0);
       clear_pattern(&tentative);
       clipboard_flush(&tentative, maxstates);
+      if (!wireframe) boxpattern(CYAN_EVER);
    }
 }
 
@@ -385,7 +381,7 @@
        return;
 
     case 'r':
-        do_expose_lifew();
+        redraw_lifew();
         displaystats();
         break;
 
@@ -405,7 +401,7 @@
     case 'Z':
         InitCurrentColors();
         DefaultPalette();
-        redisplay(1);
+        redisplay(MESH);
         break;
 
     case 'F':
@@ -434,7 +430,7 @@
         state = state == RUN ? STOP : RUN;
         lastx--;
         bounding_box(&active);
-        do_expose_lifew();
+        redraw_lifew();
         break;
 
     case '@':
@@ -526,7 +522,7 @@
         }
         else
            announce("Pseudocolor mode is off");
-        redisplay(1);
+        redisplay(MESH);
         break;
 
     case 'o':
@@ -576,7 +572,7 @@
 	for (num = 0; kbuf[0] != ")]}"[num]; num++);
 	xpos += xmarker[num] - XPOS(event.xmotion.x);
 	ypos += ymarker[num] - XPOS(event.xmotion.y);
-	do_expose_lifew();
+	redraw_lifew();
         break;
 
    case 'J':
@@ -588,7 +584,7 @@
          if (sscanf(inpbuf + 13, "%d, %d", &x, &y) == 2) {
             xpos += x + xorigin - XPOS(event.xmotion.x);
             ypos += y + yorigin - YPOS(event.xmotion.y);
-            do_expose_lifew();
+            redraw_lifew();
          }
          displaystats();
       }
@@ -611,7 +607,7 @@
          }
       }
       fixpatterntopology();
-      do_expose_lifew();
+      redraw_lifew();
       showrules();
 exit_T:
       displaystats();
@@ -645,7 +641,7 @@
            clear_pattern(&active);
            copy_tentative();
            clear_pattern(&tentative);
-           do_expose_lifew();
+           redraw_lifew();
            displaystats();
         }
         break;
@@ -663,7 +659,7 @@
            displaystats();
            center();
         }
-        do_expose_lifew();
+        redraw_lifew();
 	break;
 
     case 'S':
@@ -689,7 +685,7 @@
         numcomments = outcome[0] = 0;
 	if (tentative.tiles) {
 	    clear_pattern(&tentative);
-	    do_expose_lifew();
+	    redraw_lifew();
 	    announce("Load script (and latest load) discarded");
 	}
 	else
@@ -739,7 +735,7 @@
 	confirmload();
 	if (state == HIDE) {
             state = RUN;
-	    do_expose_lifew();
+	    redraw_lifew();
 	}
 	else
 	    state = HIDE;
@@ -819,12 +815,12 @@
            strcat(inpbuf, "ff");
         DoExpose(inputw);
         if (tentative.tiles)
-             do_expose_lifew();
+             redraw_lifew();
         break;
 
     case 'M': /* toggle gridmode */
         dispmesh ^= 1;
-        do_expose_lifew();
+        redraw_lifew();
         break;
 
     case '^': {
@@ -877,7 +873,7 @@
     case 'U': /* Get rid of loaded pattern */
         if (stashed[0]) {
            clear_pattern(&tentative);
-           do_expose_lifew();
+           redraw_lifew();
         }
         break;
 
@@ -1363,7 +1359,6 @@
     griddisplay(1);
 #endif
     for (;;) {
-        clrscn = 1;
 	while (XCheckMaskEvent(disp, KeyPressMask|ButtonPressMask|Button1MotionMask
 	        |PointerMotionMask|Button3MotionMask|ButtonReleaseMask|ExposureMask
 	        |StructureNotifyMask, &event)) {
@@ -1385,7 +1380,6 @@
 		Release();
 		break;
 	      case ConfigureNotify:
-                clrscn = 1;
 		DoResize();
 		break;
 	      case Expose:
diff -urN xlife-6.7.2/patchlevel.h xlife-6.7.3/patchlevel.h
--- xlife-6.7.2/patchlevel.h	2013-07-26 14:20:36.000000000 +0400
+++ xlife-6.7.3/patchlevel.h	2013-08-04 15:10:25.000000000 +0400
@@ -23,9 +23,9 @@
 /*
  * Several modifications were added at 2011-13 by Vladimir Lidovski vol.litwr@gmail.com
  * (C) This version of XLife may be used under the same conditions as mentioned above
- * $Id: patchlevel.h 215 2013-07-26 10:20:36Z micro $
+ * $Id: patchlevel.h 227 2013-07-30 04:15:35Z micro $
  */
 
 static int majorversion = 6;
 static int minorversion = 7;
-static int patchlevel = 2;
+static int patchlevel = 3;
diff -urN xlife-6.7.2/tentative.c xlife-6.7.3/tentative.c
--- xlife-6.7.2/tentative.c	2013-04-04 19:45:52.000000000 +0400
+++ xlife-6.7.3/tentative.c	2013-08-04 15:10:25.000000000 +0400
@@ -23,7 +23,7 @@
 /*
  * A lot of modifications were added at 2001, 2011-13 by Vladimir Lidovski vol.litwr@gmail.com
  * (C) This version of XLife may be used under the same conditions as mentioned above
- * $Id: tentative.c 178 2013-03-24 10:39:47Z micro $
+ * $Id: tentative.c 241 2013-08-04 10:00:07Z micro $
  */
 
 #include <stddef.h>     /* we need offsetof() */
@@ -39,11 +39,11 @@
 
 static void tentative_move(void) {
    if (topology != 'Q' || scale == 1 && wireframe)
-      do_expose_lifew();
+      redraw_lifew();
    else {
       if  (scale > 1 && !dispmesh && wireframe)
          griddisplay(0);
-      redisplay(1);
+      redisplay(MESH);
    }
 }
 
@@ -174,7 +174,7 @@
                if ((state = getcell(&ptr->cells, dx, dy)) == 1)
                   setcell(&ptr->cells, dx, dy, paintcolor);
    }
-   redisplay(1);
+   redisplay(MESH);
 }
 
 /* tentative.c ends here */
diff -urN xlife-6.7.2/tile.c xlife-6.7.3/tile.c
--- xlife-6.7.2/tile.c	2013-06-05 17:23:03.000000000 +0400
+++ xlife-6.7.3/tile.c	2013-08-04 15:10:25.000000000 +0400
@@ -23,7 +23,7 @@
 /*
  * A lot of modifications were added at 2001, 2011-13 by Vladimir Lidovski vol.litwr@gmail.com
  * (C) This version of XLife may be used under the same conditions as mentioned above
- * $Id: tile.c 205 2013-06-05 13:23:03Z micro $
+ * $Id: tile.c 241 2013-08-04 10:00:07Z micro $
  */
 
 /*
@@ -41,9 +41,9 @@
  *
  * void center()                  -- center viewport on barycenter of pattern
  *
- * void clear_all()                   -- clear the universe, freeing all storage
+ * void clear_all()               -- clear the universe, freeing all storage
  *
- * void redisplay(int showgrid)   -- update visible display of active board
+ * void redisplay(int mode)        -- update visible display of active board
  *
  * void drawboundedgrid(void)
  *
@@ -201,7 +201,7 @@
 	}
 	freep = 0;
 	tilesize = offsetof(tile, cells) + newsize;
-        do_expose_lifew();
+        redraw_lifew();
     }
 }
 
@@ -331,20 +331,25 @@
 
 void display_move(int force, int dx, int dy) {
    if ((tentative.tiles || force) && wireframe && scale == 1)
-      do_expose_lifew();
+      redraw_lifew();
    else if ((tentative.tiles || force) && wireframe && scale > 1 && !dispmesh) {
       griddisplay(0);
-      redisplay(1);
+      redisplay(MESH);
    }
    else if (topology != 'Q' && (dx || dy)) {
-     adjust_topology(dx, dy, 0);
-     redisplay(0);
-     adjust_topology(dx, dy, 1);
-     if (dispmesh && scale > 1) {
-        griddisplay(1);
-        if (tentative.tiles)
-           boxpattern(CYAN_EVER);
-     }
+      adjust_topology(dx, dy, 0);
+      if (tentative.tiles && wireframe) 
+         redisplay(MESH);
+      else
+         redisplay(0); 
+      adjust_topology(dx, dy, 1);
+      if (!tentative.tiles || !wireframe) {
+         if (dispmesh && scale > 1) {
+            griddisplay(1);
+            if (tentative.tiles && !wireframe)
+               boxpattern(CYAN_EVER);
+         }
+      }
    }
    else
       redisplay(tentative.tiles || force);
@@ -441,7 +446,6 @@
       ptr = nptr;
    }
    initcells(pp);
-   if (pp == &active) fb_clear();
 }
 
 void clear_all(void) {
@@ -449,7 +453,7 @@
    if (tentative.tiles)
       clear_pattern(&tentative);
    clear_pattern(&active);
-   do_expose_lifew();
+   redraw_lifew();
 }
 
 static int fb_sync() {
@@ -477,7 +481,7 @@
    return 5;
 }
 
-static int onscreen(coord_t x, coord_t y) {
+int onscreen(coord_t x, coord_t y) {
    /*this is a bit complicated due to the big torus calculations */
    int px_min = x > xpos - ascale(), py_min = y > ypos - ascale(),
       px_max = x < xpos + SCALE(width), py_max = y < ypos + SCALE(height);
@@ -503,14 +507,10 @@
    }
 }
 
-void redisplay(int showgrid) {
-/* re-display the visible part of the board */
+void tile_fb_update(void) {
    tile *ptr;
    coord_t x, y, tentx, tenty;
    int curstate, q = 0;
-   if (state == HIDE) return;
-   if (dispmesh && scale > 1 && showgrid) griddisplay(1);
-   if (!fb_sync()) return;
    if (truehistory) {
       historytile *ptr;
       for (curstate = 1; curstate >= 0; curstate--) {
@@ -588,12 +588,26 @@
             trdisplaybox(ptr->x - STARTX, ptr->y - STARTY, &ptr->cells);
          q = 0;
    }
-   /* remove pivot of tentative points */
-   if (tentative.tiles && pivot) {
+}
+
+void redisplay(int mode) {
+/* re-display the visible part of the board*/
+   tile *ptr;
+   coord_t x, y, tentx, tenty;
+   int curstate, q = 0;
+   if (state == HIDE) return;
+   if (dispmesh && scale > 1 && (mode & MESH)) griddisplay(1);
+   if (!fb_sync()) return;
+   if (tentative.tiles && pivot) { /* remove pivot of tentative points */
       if (!wireframe) boxpattern(CYAN_EVER);
       drawpivot();
    }
-   fb_flush();
+   if (mode & EXPOSE)
+      fb_flush_rep();
+   else {
+      tile_fb_update();
+      fb_flush();
+   }
    if (tentative.tiles && wireframe && scale >= 1)
       /* draw tentative points with appropriate transformation */
       for (ptr = tentative.tiles; ptr; ptr = ptr->next) {
diff -urN xlife-6.7.2/tile.h xlife-6.7.3/tile.h
--- xlife-6.7.2/tile.h	2013-03-26 13:19:17.000000000 +0400
+++ xlife-6.7.3/tile.h	2013-08-04 15:10:25.000000000 +0400
@@ -23,12 +23,16 @@
 /*
  * A lot of modifications were added at 2001, 2011-13 by Vladimir Lidovski vol.litwr@gmail.com
  * (C) This version of XLife may be used under the same conditions as mentioned above
- * $Id: tile.h 181 2013-03-26 09:19:17Z micro $
+ * $Id: tile.h 240 2013-08-01 12:11:59Z micro $
  */
 
 #define XMASK 0xfffffff8
 #define YMASK 0xfffffff8
 
+/* redisplay() modes */
+#define MESH 1
+#define EXPOSE 2
+
 extern pattern active, tentative, oscillator_check;       /* the two+1 pattern layers */
 
 void adjhash(pattern*);
@@ -51,6 +55,7 @@
 int lookcell(pattern*, coord_t, coord_t);
 tile *maketile(pattern*, coord_t, coord_t);
 void median(void);
+int onscreen(coord_t, coord_t);
 void redisplay(int);
 char* rlestr(int);
 void saveall(FILE*, char);
diff -urN xlife-6.7.2/topology.c xlife-6.7.3/topology.c
--- xlife-6.7.2/topology.c	2013-05-30 23:35:57.000000000 +0400
+++ xlife-6.7.3/topology.c	2013-08-04 15:10:25.000000000 +0400
@@ -1,6 +1,6 @@
 /*
  * XLife Copyright 2012, 2013 Vladimir Lidovski vol.litwr@gmail.com
- * $Id: topology.c 200 2013-05-30 19:35:57Z micro $
+ * $Id: topology.c 216 2013-07-28 18:06:27Z micro $
  *
  * Permission to use, copy, modify, distribute, and sell this software and its
  * documentation for any purpose is hereby granted without fee, provided that
diff -urN xlife-6.7.2/utils.c xlife-6.7.3/utils.c
--- xlife-6.7.2/utils.c	2013-04-22 20:33:59.000000000 +0400
+++ xlife-6.7.3/utils.c	2013-08-04 15:10:25.000000000 +0400
@@ -23,7 +23,7 @@
 /*
  * A lot of modifications were added at 2001, 2011-13 by Vladimir Lidovski vol.litwr@gmail.com
  * (C) This version of XLife may be used under the same conditions as mentioned above
- * $Id: utils.c 192 2013-04-22 16:33:59Z micro $
+ * $Id: utils.c 241 2013-08-04 10:00:07Z micro $
  */
 
 #include <pwd.h>
@@ -280,7 +280,7 @@
    dispchanges = save_dispchanges;
    if ((dispboxes = save_dispboxes) || dispchanges) bounding_box(&active);
    tm = end.tv_sec - start.tv_sec + (end.tv_usec - start.tv_usec)/1000000.0;
-   do_expose_lifew();
+   redraw_lifew();
    sprintf(inpbuf, "Time: %fs, Speed: %u", tm,
                                            tm > 0 ? speed = count/tm + .5 : 0);
    announce_and_wait(0);
@@ -372,7 +372,7 @@
          XSetWindowBackground(disp, lifew, cellcolor->pixel);
          XClearWindow(disp, lifew);
       }
-      redisplay(1);
+      redisplay(MESH);
       showstates();
    }
    displaystats();
diff -urN xlife-6.7.2/xwidget.c xlife-6.7.3/xwidget.c
--- xlife-6.7.2/xwidget.c	2013-03-26 13:19:17.000000000 +0400
+++ xlife-6.7.3/xwidget.c	2013-08-04 15:10:25.000000000 +0400
@@ -1,6 +1,6 @@
 /*
  * XLife Copyright 2011-13 Vladimir Lidovski vol.litwr@gmail.com
- * $Id: xwidget.c 181 2013-03-26 09:19:17Z micro $
+ * $Id: xwidget.c 241 2013-08-04 10:00:07Z micro $
  *
  * Permission to use, copy, modify, distribute, and sell this software and its
  * documentation for any purpose is hereby granted without fee, provided that
@@ -405,7 +405,6 @@
    strcpy(saved_rules, active_rules);
    if (!loadfile_req(fn))
       return;
-   adjhash(&tentative);
    if (rules_changed())
       free_loadscript();
    sprintf(inpbuf, "%d lines of comments", numcomments);