From 5163a157c4f9b552db220efaa753f210518817fe Mon Sep 17 00:00:00 2001
From: Masaya Tojo <masaya@tojo.tokyo>
Date: Thu, 9 Sep 2021 22:53:04 +0900
Subject: Add `(in-package "ACL2")` lines.

---
 binary-tree.lisp | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'binary-tree.lisp')

diff --git a/binary-tree.lisp b/binary-tree.lisp
index b26b8fb..aab189d 100644
--- a/binary-tree.lisp
+++ b/binary-tree.lisp
@@ -1,3 +1,5 @@
+(in-package "ACL2")
+
 (defun emptyp (x)
  (atom x))
 
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