--- help.c	2003-09-08 16:25:33.000000000 +0200
+++ help.c.new	2005-08-24 15:00:17.818478223 +0200
@@ -37,6 +37,7 @@
 extern struct mchar mchar_blank, mchar_so;
 extern unsigned char *blank;
 extern struct win *wtab[];
+extern int maxwin;
 
 static void PadStr __P((char *, int, int, int));
 
@@ -896,6 +897,23 @@
 }
 
 static void
+exchangeWindow(wlistdata, diff) 
+struct wlistdata *wlistdata;
+int diff;
+{
+	int pos = wlistdata->pos;
+	int new = pos+diff;
+	if (new >= 0 && new < maxwin && wtab[new]) {
+		struct win *oldwin = wtab[pos];
+		wtab[pos] = wtab[new];
+		wtab[pos]->w_number = pos;
+		wtab[new] = oldwin;
+		wtab[new]->w_number = new;
+	}
+	WListMove(diff, -1); /* refresh the screen */
+}
+
+static void
 WListProcess(ppbuf, plen)
 char **ppbuf;
 int *plen;
@@ -930,6 +948,16 @@
 	case 'k':
 	  WListMove(-1, -1);
 	  break;
+	
+	case 'N':
+	case 'J':
+	  exchangeWindow(wlistdata, 1);
+	  break;
+	case 'P':
+	case 'K':
+	  exchangeWindow(wlistdata, -1);
+	  break; 
+
 	case 0216:	/* down */
 	case 14:	/* ^N like emacs */
 	case 'j':