--- psbook.c.orig	Wed Mar 12 07:53:01 1997
+++ psbook.c	Sat Jan 22 12:33:18 2000
@@ -36,6 +36,7 @@
 {
    int signature = 0;
    int currentpg, maxpage;
+   int right = 0;
 
    infile = stdin;
    outfile = stdout;
@@ -50,6 +51,9 @@
 	 case 'q':	/* quiet */
 	    verbose = 0;
 	    break;
+	 case 'r':	/* bind RIGHT side of the book */
+	    right = 1; 
+	    break;
 	 case 'v':	/* version */
 	 default:
 	    usage();
@@ -93,11 +97,17 @@
       switch(currentpg%4) {
       case 0:
       case 3:
-	 actualpg += signature-1-(currentpg%signature)/2;
+	 if (! right)
+	    actualpg += signature-1-(currentpg%signature)/2;
+	 else
+	    actualpg += (currentpg%signature)/2;
 	 break;
       case 1:
       case 2:
-	 actualpg += (currentpg%signature)/2;
+	 if (! right)
+	    actualpg += (currentpg%signature)/2;
+	 else
+	    actualpg += signature-1-(currentpg%signature)/2;
 	 break;
       }
       if (actualpg < pages)