<function>
<fname>http_system</fname>
<prototype>

void
http_system(
	    char * host_name,
	    int port,
	    char * change_page)

</prototype>
<explanation>
<pre>
	host_name    :
	port         :
	change_page  :
</pre>
</explanation>
<history>
<renew "02/4/12">
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<renew "02/11/19">
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http_system(host_name,port,change_page);

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</history>
</function>