diff --git a/src/comm.c b/src/comm.c
index 5f4af8a..7ef168f 100644
--- a/src/comm.c
+++ b/src/comm.c
@@ -238,6 +238,7 @@ struct comm comms[RC_LAST + 1] =
   { "mousetrack",	NEED_DISPLAY | ARGS_01 },
   { "msgminwait",	ARGS_1 },
   { "msgwait",		ARGS_1 },
+  { "multiinput",	ARGS_01 },
 #ifdef MULTIUSER
   { "multiuser",	ARGS_1 },
 #endif
diff --git a/src/list_window.c b/src/list_window.c
index 2242de9..ce97193 100644
--- a/src/list_window.c
+++ b/src/list_window.c
@@ -335,6 +335,10 @@ gl_Window_input(struct ListData *ldata, char **inp, int *len)
       gl_Window_rebuild(ldata);
       break;
 
+    case '>':
+      win->w_miflag = win->w_miflag ? 0 : 1;
+      WindowChangeNumber(win, win->w_number);
+      break;
     case 'a':
       /* All-window view */
       if (wdata->group)
diff --git a/src/process.c b/src/process.c
index 70e59f3..0645385 100644
--- a/src/process.c
+++ b/src/process.c
@@ -1237,6 +1237,29 @@ int key;
       else if (queryflag >= 0)
 	queryflag = -1;	/* ParseWinNum already prints out an appropriate error message. */
       break;
+    case RC_MULTIINPUT:
+      if (!*args)
+        {
+	  if (!fore)
+	    OutputMsg(0, "multiinput needs a window");
+	  else 
+	    fore->w_miflag = (fore->w_miflag) ? 0 : 1;
+	}
+      else
+        {
+          if (ParseWinNum(act, &n) == 0)
+	    {
+	      struct win *p;
+              if ((p = wtab[n]) == 0)
+                {
+                  ShowWindows(n);
+                  break;
+                }
+              else
+	        p->w_miflag = (p->w_miflag) ? 0 : 1;
+            }
+	}
+      break;
 #ifdef AUTO_NUKE
     case RC_DEFAUTONUKE:
       if (ParseOnOff(act, &defautonuke) == 0 && msgok)
@@ -5494,6 +5517,8 @@ struct win *p;
     }
   if (p->w_ptyfd < 0 && p->w_type != W_TYPE_GROUP)
     *s++ = 'Z';
+  if (p->w_miflag)
+    *s++ = '>';
   *s = 0;
   return s;
 }
diff --git a/src/window.c b/src/window.c
index 1c6f5b6..d9f5993 100644
--- a/src/window.c
+++ b/src/window.c
@@ -1944,14 +1944,22 @@ struct event *ev;
 char *data;
 {
   struct win *p = (struct win *)data;
+  struct win *win;
   int len;
   if (p->w_inlen)
     {
       debug2("writing %d bytes to win %d\n", p->w_inlen, p->w_number);
       if ((len = write(ev->fd, p->w_inbuf, p->w_inlen)) <= 0)
 	len = p->w_inlen;	/* dead window */
+
+      if (p->w_miflag) /* don't loop if not needed */
+        for (win = windows; win; win = win->w_next)
+          if (win != p && win->w_miflag)
+            write(win->w_ptyfd, p->w_inbuf, p->w_inlen);
+
       if ((p->w_inlen -= len))
 	bcopy(p->w_inbuf + len, p->w_inbuf, p->w_inlen);
+
     }
 #ifdef COPY_PASTE
   if (p->w_paster.pa_pastelen && !p->w_slowpaste)
diff --git a/src/window.h b/src/window.h
index 7311ecb..cec9e78 100644
--- a/src/window.h
+++ b/src/window.h
@@ -299,6 +299,7 @@ struct win
 #else
   int w_exitstatus;
 #endif
+  int w_miflag;			/* multiple windows input flag */
 };