Hi,guys
 
 
 
I had resolved this question. I  substituted src file in 
https://github.com/HOL-Theorem-Prover/HOL for src in HOL4 directory, and start 
HOL4 by pointing hol\bin\hol.bat. Then, it worked.
 
 
 
 
 
Message: 2
Date: Wed, 2 Mar 2016 10:18:04 +0800
From: " ?? " <956066...@qq.com>
Subject: Re: [Hol-info] How to transform list format from "(cx l q p)"
to "l"
To: " hol-info " <hol-info@lists.sourceforge.net>
Message-ID: <tencent_2155785e19a3c2d91ec40...@qq.com>
Content-Type: text/plain; charset="gb18030"

Thank you for your reply!
 My version of HOL4 is HOL-4 [Kananaskis 10 (stdknl, built Mon Nov 10 14:27:30 
2014)], where Moscow ML version 2.01 (January 2004). Then from 
https://hol-theorem-prover.org/#get, I installed PolyML5.6-32bit, and pointed 
""bin/build". Then I got HOL-4 [Kananaskis 10 (stdknl, built Mon Feb 29 
21:47:05 2016)],where Moscow ML version 2.01 (January 2004). 
 I Opened HOL4, print"open listTheory;", I still can't use LENGTH_TAKE_EQ, it 
responed "Unbound value component: listTheory.LENGTH_TAKE_EQ". I had downloaded 
the files in https://github.com/HOL-Theorem-Prover/HOL. How to add it to HOL4's 
directory? After that ,I could print  "open listTheory;" in HOL4, and use 
LENGTH_TAKE_EQ.
  
 Thanks.
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