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Title change and some cleanup.

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functions/zlib.xml
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@ -1,61 +1,72 @@
<reference id="ref.zlib">
<title>Compression functions</title>
<title>Zlib Compression Functions</title>
<titleabbrev>Zlib</titleabbrev>
<partintro>
<para>
This module uses the functions of <ulink url="&url.zlib;">zlib</ulink> by Jean-loup Gailly and Mark Adler to
This module uses the functions of <ulink
url="&url.zlib;">zlib</ulink> by Jean-loup Gailly and Mark Adler to
transparently read and write gzip (.gz) compressed files. You have
to use a zlib version >= 1.0.9 with this module.
</para>
<para>
This module contains versions of most of the <link linkend="ref.filesystem">filesystem</link> functions which work
This module contains versions of most of the <link
linkend="ref.filesystem">filesystem</link> functions which work
with gzip-compressed files (and uncompressed files, too, but not
with sockets).
</para>
<sect1 id="zlib-example">
<title>Small code example</title>
<para>
Opens a temporary file and writes a test string to it, then it
prints out the content of this file twice.
</para>
<para>
Opens a temporary file and writes a test string to it, then it
prints out the content of this file twice.
</para>
<example>
<title>Small Zlib example</title>
<title>Small Zlib Example</title>
<programlisting role="php">
&lt;?php
$filename = tempnam('/tmp', 'zlibtest').'.gz';
print "&lt;html>\n&lt;head>&lt;/head>\n&lt;body>\n&lt;pre>\n";
$s = "Only a test, test, test, test, test, test, test, test!\n";
// open file for writing with maximum compression
$zp = gzopen($filename, "w9");
// write string to file
gzwrite($zp, $s);
// close file
gzclose($zp);
// open file for reading
$zp = gzopen($filename, "r");
// read 3 char
print gzread($zp, 3);
// output until end of the file and close it.
gzpassthru($zp);
print "\n";
// open file and print content (the 2nd time).
if (readgzfile($filename) != strlen($s)) {
echo "Error with zlib functions!";
}
unlink($filename);
print "&lt;/pre>\n&lt;/h1>&lt;/body>\n&lt;/html>\n";
?>
</programlisting>
</example></sect1>
$filename = tempnam ('/tmp', 'zlibtest').'.gz';
print "&lt;html>\n&lt;head>&lt;/head>\n&lt;body>\n&lt;pre>\n";
$s = "Only a test, test, test, test, test, test, test, test!\n";
// open file for writing with maximum compression
$zp = gzopen($filename, "w9");
// write string to file
gzwrite($zp, $s);
// close file
gzclose($zp);
// open file for reading
$zp = gzopen($filename, "r");
// read 3 char
print gzread($zp, 3);
// output until end of the file and close it.
gzpassthru($zp);
print "\n";
// open file and print content (the 2nd time).
if (readgzfile($filename) != strlen($s)) {
echo "Error with zlib functions!";
}
unlink($filename);
print "&lt;/pre>\n&lt;/h1>&lt;/body>\n&lt;/html>\n";
?>
</programlisting>
</example>
</sect1>
</partintro>
<refentry id="function.gzclose">
<refnamediv>
<refname>gzclose</refname>
<refpurpose>close an open gz-file pointer</refpurpose>
<refpurpose>Close an open gz-file pointer</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
@ -66,23 +77,22 @@
</funcprototype>
</funcsynopsis>
<para>
The gz-file pointed to by zp is closed.</para>
The gz-file pointed to by zp is closed.
</para>
<para>
Returns true on success and false on failure.</para>
Returns true on success and false on failure.
</para>
<para>
The gz-file pointer must be valid, and must point to a file
successfully opened by <function>gzopen</function>.</para>
successfully opened by <function>gzopen</function>.
</para>
</refsect1>
</refentry>
<refentry id="function.gzeof">
<refnamediv>
<refname>gzeof</refname>
<refpurpose>test for end-of-file on a gz-file pointer</refpurpose>
<refpurpose>Test for end-of-file on a gz-file pointer</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
@ -94,20 +104,19 @@
</funcsynopsis>
<para>
Returns true if the gz-file pointer is at EOF or an error occurs;
otherwise returns false.</para>
otherwise returns false.
</para>
<para>
The gz-file pointer must be valid, and must point to a file
successfully opened by <function>gzopen</function>.</para>
successfully opened by <function>gzopen</function>.
</para>
</refsect1>
</refentry>
<refentry id="function.gzfile">
<refnamediv>
<refname>gzfile</refname> <refpurpose>read entire gz-file into an
array</refpurpose>
<refname>gzfile</refname>
<refpurpose>Read entire gz-file into an array</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
@ -115,26 +124,31 @@
<funcprototype>
<funcdef>array <function>gzfile</function></funcdef>
<paramdef>string <parameter>filename</parameter></paramdef>
<paramdef>int <parameter><optional>use_include_path</optional></parameter></paramdef>
<paramdef>int
<parameter><optional>use_include_path</optional></parameter>
</paramdef>
</funcprototype>
</funcsynopsis>
<para> Identical to <function>readgzfile</function>, except that gzfile()
returns the file in an array.</para>
<para>
Identical to <function>readgzfile</function>, except that
<function>gzfile</function> returns the file in an array.
</para>
<para>
You can use the optional second parameter and set it to "1", if
you want to search for the file in the <link linkend="ini.include-path">include_path</link>, too.</para>
<para> See also <function>readgzfile</function>, and
<function>gzopen</function>.</para>
you want to search for the file in the <link
linkend="ini.include-path">include_path</link>, too.
</para>
<para>
See also <function>readgzfile</function>, and
<function>gzopen</function>.
</para>
</refsect1>
</refentry>
<refentry id="function.gzgetc">
<refnamediv>
<refname>gzgetc</refname>
<refpurpose>get character from gz-file pointer</refpurpose>
<refpurpose>Get character from gz-file pointer</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
@ -147,23 +161,23 @@
<para>
Returns a string containing a single (uncompressed) character
read from the file pointed to by zp. Returns FALSE on EOF (as
does <function>gzeof</function>).</para>
does <function>gzeof</function>).
</para>
<para>
The gz-file pointer must be valid, and must point to a file
successfully opened by <function>gzopen</function>.</para>
<para> See also
<function>gzopen</function>, and
<function>gzgets</function>.</para>
successfully opened by <function>gzopen</function>.
</para>
<para>
See also <function>gzopen</function>, and
<function>gzgets</function>.
</para>
</refsect1>
</refentry>
<refentry id="function.gzgets">
<refnamediv>
<refname>gzgets</refname>
<refpurpose>get line from file pointer</refpurpose>
<refpurpose>Get line from file pointer</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
@ -174,29 +188,32 @@
<paramdef>int <parameter>length</parameter></paramdef>
</funcprototype>
</funcsynopsis>
<para>
Returns a (uncompressed) string of up to length - 1 bytes read
from the file pointed to by fp. Reading ends when length - 1
bytes have been read, on a newline, or on EOF (whichever comes
first).</para>
<para> If an error occurs, returns false.</para>
<para> The file pointer must be valid, and must point to a file
successfully opened by <function>gzopen</function>.</para>
<para> See also <function>gzopen</function>,
<function>gzgetc</function>, and <function>fgets</function>.</para>
first).
</para>
<para>
If an error occurs, returns false.
</para>
<para>
The file pointer must be valid, and must point to a file
successfully opened by <function>gzopen</function>.
</para>
<para>
See also <function>gzopen</function>,
<function>gzgetc</function>, and <function>fgets</function>.
</para>
</refsect1>
</refentry>
<refentry id="function.gzgetss">
<refnamediv>
<refname>gzgetss</refname>
<refpurpose>get line from gz-file pointer and strip HTML tags</refpurpose>
<refpurpose>
Get line from gz-file pointer and strip HTML tags
</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
@ -205,34 +222,37 @@
<funcdef>string <function>gzgetss</function></funcdef>
<paramdef>int <parameter>zp</parameter></paramdef>
<paramdef>int <parameter>length</parameter></paramdef>
<paramdef>string <parameter><optional>allowable_tags</optional></parameter></paramdef>
<paramdef>string
<parameter><optional>allowable_tags</optional></parameter>
</paramdef>
</funcprototype>
</funcsynopsis>
<para>
Identical to <function>gzgets</function>,
except that gzgetss attempts to strip any HTML and PHP tags from
the text it reads.</para>
Identical to <function>gzgets</function>, except that
<function>gzgetss</function> attempts to strip any HTML and PHP
tags from the text it reads.
</para>
<para>
You can use the optional third parameter to specify tags which
should not be stripped.
<note>
<para>
<parameter>allowable_tags</parameter> was added in PHP 3.0.13, PHP4B3.</para>
</note></para>
<note>
<para>
<parameter>Allowable_tags</parameter> was added in PHP 3.0.13,
PHP4B3.
</para>
</note>
</para>
<para>
See also <function>gzgets</function>,
<function>gzopen</function>, and <function>strip_tags</function>.</para>
<function>gzopen</function>, and <function>strip_tags</function>.
</para>
</refsect1>
</refentry>
<refentry id="function.gzopen">
<refnamediv>
<refname>gzopen</refname>
<refpurpose>open gz-file</refpurpose>
<refpurpose>Open gz-file</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
@ -241,7 +261,9 @@
<funcdef>int <function>gzopen</function></funcdef>
<paramdef>string <parameter>filename</parameter></paramdef>
<paramdef>string <parameter>mode</parameter></paramdef>
<paramdef>int <parameter><optional>use_include_path</optional></parameter></paramdef>
<paramdef>int
<parameter><optional>use_include_path</optional></parameter>
</paramdef>
</funcprototype>
</funcsynopsis>
<para>
@ -250,42 +272,47 @@
can also include a compression level ("wb9") or a strategy: 'f'
for filtered data as in "wb6f", 'h' for Huffman only compression
as in "wb1h". (See the description of deflateInit2 in zlib.h for
more information about the strategy parameter.)</para>
more information about the strategy parameter.)
</para>
<para>
Gzopen can be used to read a file which is not in gzip format; in
this case <function>gzread</function> will directly read from the
file without decompression.</para>
<function>Gzopen</function> can be used to read a file which is
not in gzip format; in this case <function>gzread</function> will
directly read from the file without decompression.
</para>
<para>
Gzopen returns a file pointer to the file opened, after that,
everything you read from this file descriptor will be
transparently decompressed and what you write gets compressed.</para>
<function>Gzopen</function> returns a file pointer to the file
opened, after that, everything you read from this file descriptor
will be transparently decompressed and what you write gets
compressed.
</para>
<para>
If the open fails, the function returns false.</para>
If the open fails, the function returns false.
</para>
<para>
You can use the optional third parameter and set it to "1", if
you want to search for the file in the <link linkend="ini.include-path">include_path</link>, too.</para>
<para><example>
<title>gzopen() example</title>
<programlisting>
$fp = gzopen("/tmp/file.gz", "r");
</programlisting></example></para>
you want to search for the file in the <link
linkend="ini.include-path">include_path</link>, too.
</para>
<para>
See also <function>gzclose</function>.</para>
<example>
<title><function>Gzopen</function> Example</title>
<programlisting role="php">
$fp = gzopen ("/tmp/file.gz", "r");
</programlisting>
</example>
</para>
<para>
See also <function>gzclose</function>.
</para>
</refsect1>
</refentry>
<refentry id="function.gzpassthru">
<refnamediv>
<refname>gzpassthru</refname>
<refpurpose>output all remaining data on a gz-file pointer</refpurpose>
<refpurpose>
Output all remaining data on a gz-file pointer
</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
@ -297,27 +324,26 @@ $fp = gzopen("/tmp/file.gz", "r");
</funcsynopsis>
<para>
Reads to EOF on the given gz-file pointer and writes the
(uncompressed) results to standard output.</para>
(uncompressed) results to standard output.
</para>
<para>
If an error occurs, returns false.</para>
If an error occurs, returns false.
</para>
<para>
The file pointer must be valid, and must point to a file
successfully opened by <function>gzopen</function>.</para>
successfully opened by <function>gzopen</function>.
</para>
<para>
The gz-file is closed when <function>gzpassthru</function> is
done reading it (leaving <parameter>zp</parameter> useless).</para>
done reading it (leaving <parameter>zp</parameter> useless).
</para>
</refsect1>
</refentry>
<refentry id="function.gzputs">
<refnamediv>
<refname>gzputs</refname>
<refpurpose>write to a gz-file pointer</refpurpose>
<refpurpose>Write to a gz-file pointer</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
@ -326,18 +352,18 @@ $fp = gzopen("/tmp/file.gz", "r");
<funcdef>int <function>gzputs</function></funcdef>
<paramdef>int <parameter>zp</parameter></paramdef>
<paramdef>string <parameter>str</parameter></paramdef>
<paramdef>int <parameter><optional>length</optional></parameter></paramdef>
<paramdef>int
<parameter><optional>length</optional></parameter>
</paramdef>
</funcprototype>
</funcsynopsis>
<para>
<function>gzputs</function> is an alias to
<function>gzwrite</function>, and is identical in every way.</para>
<function>Gzputs</function> is an alias to
<function>gzwrite</function>, and is identical in every way.
</para>
</refsect1>
</refentry>
<refentry id="function.gzread">
<refnamediv>
<refname>gzread</refname>
@ -357,31 +383,31 @@ $fp = gzopen("/tmp/file.gz", "r");
<parameter>length</parameter> bytes from the gz-file pointer
referenced by <parameter>zp</parameter>. Reading stops when
<parameter>length</parameter> (uncompressed) bytes have been read
or EOF is reached, whichever comes first.</simpara>
or EOF is reached, whichever comes first.
</simpara>
<para>
<informalexample>
<programlisting>
<programlisting role="php">
// get contents of a gz-file into a string
$filename = "/usr/local/something.txt.gz";
$zd = gzopen( $filename, "r" );
$contents = gzread( $zd, 10000 );
gzclose( $zd );
$zd = gzopen ($filename, "r");
$contents = gzread ($zd, 10000);
gzclose ($zd);
</programlisting>
</informalexample></para>
</informalexample>
</para>
<simpara>
See also <function>gzwrite</function>, <function>gzopen</function>,
<function>gzgets</function>, <function>gzgetss</function>,
<function>gzfile</function>, and <function>gzpassthru</function>.</simpara>
<function>gzfile</function>, and <function>gzpassthru</function>.
</simpara>
</refsect1>
</refentry>
<refentry id="function.gzrewind">
<refnamediv>
<refname>gzrewind</refname>
<refpurpose>rewind the position of a gz-file pointer</refpurpose>
<refpurpose>Rewind the position of a gz-file pointer</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
@ -391,21 +417,28 @@ gzclose( $zd );
<paramdef>int <parameter>zp</parameter></paramdef>
</funcprototype>
</funcsynopsis>
<para> Sets the file position indicator for zp to the
beginning of the file stream.</para>
<para> If an error occurs, returns 0.</para>
<para> The file pointer must be valid, and must point to a file
successfully opened by <function>gzopen</function>.</para>
<para>
See also <function>gzseek</function> and <function>gztell</function>.</para>
<para>
Sets the file position indicator for zp to the beginning of the
file stream.
</para>
<para>
If an error occurs, returns 0.
</para>
<para>
The file pointer must be valid, and must point to a file
successfully opened by <function>gzopen</function>.
</para>
<para>
See also <function>gzseek</function> and
<function>gztell</function>.
</para>
</refsect1>
</refentry>
<refentry id="function.gzseek">
<refnamediv>
<refname>gzseek</refname>
<refpurpose>seek on a gz-file pointer</refpurpose>
<refpurpose>Seek on a gz-file pointer</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
@ -419,30 +452,29 @@ gzclose( $zd );
<para>
Sets the file position indicator for the file referenced by zp to
offset bytes into the file stream. Equivalent to calling (in C)
<literal>gzseek( zp, offset, SEEK_SET )</literal>.</para>
<literal>gzseek( zp, offset, SEEK_SET )</literal>.
</para>
<para>
If the file is opened for reading, this function is emulated but
can be extremely slow. If the file is opened for writing, only
forward seeks are supported; gzseek then compresses a sequence of
zeroes up to the new starting position.</para>
zeroes up to the new starting position.
</para>
<para>
Upon success, returns 0; otherwise, returns -1. Note that seeking
past EOF is not considered an error.</para>
past EOF is not considered an error.
</para>
<para>
See also <function>gztell</function> and
<function>gzrewind</function>.</para>
<function>gzrewind</function>.
</para>
</refsect1>
</refentry>
<refentry id="function.gztell">
<refnamediv>
<refname>gztell</refname>
<refpurpose>tell gz-file pointer read/write position</refpurpose>
<refpurpose>Tell gz-file pointer read/write position</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
@ -453,19 +485,21 @@ gzclose( $zd );
</funcprototype>
</funcsynopsis>
<para>
Returns the position of the file pointer referenced by zp; i.e.,
its offset into the file stream.</para>
Returns the position of the file pointer referenced by
<parameter>zp</parameter>; i.e., its offset into the file
stream.
</para>
<para>
If an error occurs, returns false.</para>
If an error occurs, returns false.
</para>
<para>
The file pointer must be valid, and must point to a file
successfully opened by <function>gzopen</function>.</para>
<para> See also <function>gzopen</function>,
<function>gzseek</function> and <function>gzrewind</function>.</para>
successfully opened by <function>gzopen</function>.
</para>
<para>
See also <function>gzopen</function>, <function>gzseek</function>
and <function>gzrewind</function>.
</para>
</refsect1>
</refentry>
@ -481,34 +515,38 @@ gzclose( $zd );
<funcdef>int <function>gzwrite</function></funcdef>
<paramdef>int <parameter>zp</parameter></paramdef>
<paramdef>string <parameter>string</parameter></paramdef>
<paramdef>int <parameter><optional>length</optional></parameter></paramdef>
<paramdef>int
<parameter><optional>length</optional></parameter>
</paramdef>
</funcprototype>
</funcsynopsis>
<simpara>
<function>gzwrite</function> writes the contents of
<function>Gzwrite</function> writes the contents of
<parameter>string</parameter> to the gz-file stream pointed to by
<parameter>zp</parameter>. If the <parameter>length</parameter>
argument is given, writing will stop after
<parameter>length</parameter> (uncompressed) bytes have been
written or the end of <parameter>string</parameter> is reached,
whichever comes first.</simpara>
whichever comes first.
</simpara>
<simpara>
Note that if the <parameter>length</parameter> argument is given,
then the <link linkend="ini.magic-quotes-runtime">magic_quotes_runtime</link>
then the <link
linkend="ini.magic-quotes-runtime">magic_quotes_runtime</link>
configuration option will be ignored and no slashes will be
stripped from <parameter>string</parameter>.</simpara>
stripped from <parameter>string</parameter>.
</simpara>
<simpara>
See also <function>gzread</function>, <function>gzopen</function>,
and <function>gzputs</function>.</simpara>
and <function>gzputs</function>.
</simpara>
</refsect1>
</refentry>
<refentry id="function.readgzfile">
<refnamediv>
<refname>readgzfile</refname>
<refpurpose>output a gz-file</refpurpose>
<refpurpose>Output a gz-file</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
@ -516,39 +554,47 @@ gzclose( $zd );
<funcprototype>
<funcdef>int <function>readgzfile</function></funcdef>
<paramdef>string <parameter>filename</parameter></paramdef>
<paramdef>int <parameter><optional>use_include_path</optional></parameter></paramdef>
<paramdef>int
<parameter><optional>use_include_path</optional></parameter>
</paramdef>
</funcprototype>
</funcsynopsis>
<para> Reads a file, decompresses it and writes it to standard
output.</para>
<para>
Reads a file, decompresses it and writes it to standard
output.
</para>
<para>
Readgzfile() can be used to read a file which is not in gzip
format; in this case readgzfile() will directly read from the
file without decompression.</para>
<para> Returns the number of (uncompressed) bytes read from the
file. If an error occurs, false is returned and unless the
function was called as @readgzfile, an error message is printed.</para>
<para> The file <parameter>filename</parameter> will be opened
from the filesystem and its contents written to standard output.</para>
<function>Readgzfile</function> can be used to read a file which
is not in gzip format; in this case
<function>readgzfile</function> will directly read from the file
without decompression.
</para>
<para>
Returns the number of (uncompressed) bytes read from the file. If
an error occurs, false is returned and unless the function was
called as <literal>@readgzfile</literal>, an error message is
printed.
</para>
<para>
The file <parameter>filename</parameter> will be opened from the
filesystem and its contents written to standard output.
</para>
<para>
You can use the optional second parameter and set it to "1", if
you want to search for the file in the <link linkend="ini.include-path">include_path</link>, too.</para>
you want to search for the file in the <link
linkend="ini.include-path">include_path</link>, too.
</para>
<para>
See also <function>gzpassthru</function>,
<function>gzfile</function>, and <function>gzopen</function>.</para>
<function>gzfile</function>, and <function>gzopen</function>.
</para>
</refsect1>
</refentry>
<refentry id="function.gzcompress">
<refnamediv>
<refname>gzcompress</refname>
<refpurpose>gz-compress a string</refpurpose>
<refpurpose>Gz-compress a string</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
@ -556,15 +602,17 @@ gzclose( $zd );
<funcprototype>
<funcdef>string <function>gzcompress</function></funcdef>
<paramdef>string <parameter>data</parameter></paramdef>
<paramdef>int <parameter><optional>level</optional></parameter></paramdef>
<paramdef>int
<parameter><optional>level</optional></parameter>
</paramdef>
</funcprototype>
</funcsynopsis>
<para>
This function returns a gzip-compressed version of the input
<parameter>data</parameter> or false on errors. The optional parameter
<parameter>level</parameter> can be given as 0 for no compression
up to 9 for maximum compression.
</para>
<para>
This function returns a gzip-compressed version of the input
<parameter>data</parameter> or false on errors. The optional
parameter <parameter>level</parameter> can be given as 0 for no
compression up to 9 for maximum compression.
</para>
<para>
See also <function>gzuncompress</function>.
</para>
@ -574,7 +622,7 @@ gzclose( $zd );
<refentry id="function.gzuncompress">
<refnamediv>
<refname>gzuncompress</refname>
<refpurpose>uncompress a gz-compressed string</refpurpose>
<refpurpose>Uncompress a gz-compressed string</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
@ -582,17 +630,19 @@ gzclose( $zd );
<funcprototype>
<funcdef>string <function>gzcompress</function></funcdef>
<paramdef>string <parameter>data</parameter></paramdef>
<paramdef>int <parameter><optional>length</optional></parameter></paramdef>
<paramdef>int
<parameter><optional>length</optional></parameter>
</paramdef>
</funcprototype>
</funcsynopsis>
<para>
This function takes <parameter>data</parameter> compressed by
<function>gzcompress</function> and returns the orignial uncompressed
data or false on error.
The function will return an error if the uncompressed data is more than 256
times the lenght of the compressed input <parameter>data</parameter> or more
than the optional parameter <parameter>length</parameter>.
</para>
This function takes <parameter>data</parameter> compressed by
<function>gzcompress</function> and returns the orignial
uncompressed data or false on error. The function will return an
error if the uncompressed data is more than 256 times the lenght
of the compressed input <parameter>data</parameter> or more than
the optional parameter <parameter>length</parameter>.
</para>
<para>
See also <function>gzcompress</function>.
</para>
@ -611,7 +661,7 @@ sgml-always-quote-attributes:t
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sgml-default-dtd-file:"../manual.ced"
sgml-default-dtd-file:"../../manual.ced"
sgml-exposed-tags:nil
sgml-local-catalogs:nil
sgml-local-ecat-files:nil