--- stack/stack.c	2002/03/12 14:53:19	1.105
+++ stack/stack.c	2002/03/12 15:13:48	1.106
@@ -989,7 +989,7 @@
   }
 
   if(myenv.interactive) {
-    printf("Stack version $Revision: 1.105 $\n\
+    printf("Stack version $Revision: 1.106 $\n\
 Copyright (C) 2002  Mats Alritzson and Teddy Hogeborn\n\
 Stack comes with ABSOLUTELY NO WARRANTY; for details type `warranty;'.\n\
 This is free software, and you are welcome to redistribute it\n\
@@ -1362,6 +1362,26 @@
   eval(env);
 }
 
+extern void sx_656c7365(environment *env)
+{
+  if(env->head==NULL || CDR(env->head)==NULL 
+     || CDR(CDR(env->head))==NULL || CDR(CDR(CDR(env->head)))==NULL) {
+    printerr("Too Few Arguments");
+    env->err= 1;
+    return;
+  }
+
+  if(CAR(CDR(env->head))->type!=symb
+     || strcmp(CAR(CDR(env->head))->content.sym->id, "if")!=0) {
+    printerr("Bad Argument Type");
+    env->err= 2;
+    return;
+  }
+
+  swap(env); toss(env);
+  ifelse(env);
+}
+
 /* "while" */
 extern void sx_7768696c65(environment *env)
 {