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<div id="projectname">EXIF library (libexif) API
 <span id="projectnumber">0.6.21</span>
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<a href="exif-entry_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> </div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">/*</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> * Copyright (c) 2001 Lutz Mueller <lutz@users.sourceforge.net></span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> *</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * This library is free software; you can redistribute it and/or</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * modify it under the terms of the GNU Lesser General Public</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> * License as published by the Free Software Foundation; either</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> * version 2 of the License, or (at your option) any later version.</span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> *</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * This library is distributed in the hope that it will be useful, </span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of </span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> * Lesser General Public License for more details. </span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> *</span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * You should have received a copy of the GNU Lesser General Public</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> * License along with this library; if not, write to the</span></div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,</span></div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> * Boston, MA 02110-1301 USA.</span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment"> */</span></div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> </div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#ifndef __EXIF_ENTRY_H__</span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#define __EXIF_ENTRY_H__</span></div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> </div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#ifdef __cplusplus</span></div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="keyword">extern</span> <span class="stringliteral">"C"</span> {</div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor">#endif </span><span class="comment">/* __cplusplus */</span><span class="preprocessor"></span></div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> </div><div class="line"><a name="l00035"></a><span class="lineno"><a class="line" href="exif-entry_8h.html#a1629f9c1b9c17765f4e5b297f91a6e45"> 35</a></span> <span class="keyword">typedef</span> <span class="keyword">struct </span><a class="code" href="struct__ExifEntry.html">_ExifEntry</a> <a class="code" href="struct__ExifEntry.html">ExifEntry</a>;</div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="keyword">typedef</span> <span class="keyword">struct </span>_ExifEntryPrivate ExifEntryPrivate;</div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span> </div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="preprocessor">#include <<a class="code" href="exif-content_8h.html">libexif/exif-content.h</a>></span></div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="preprocessor">#include <<a class="code" href="exif-format_8h.html">libexif/exif-format.h</a>></span></div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="preprocessor">#include <<a class="code" href="exif-mem_8h.html">libexif/exif-mem.h</a>></span></div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span> </div><div class="line"><a name="l00043"></a><span class="lineno"><a class="line" href="struct__ExifEntry.html"> 43</a></span> <span class="keyword">struct </span><a class="code" href="struct__ExifEntry.html">_ExifEntry</a> {</div><div class="line"><a name="l00045"></a><span class="lineno"><a class="line" href="struct__ExifEntry.html#aa03a4dc9fa98c8bbc447c19a4d0536e9"> 45</a></span>  <a class="code" href="exif-tag_8h.html#a1a0ded93d47585f6889eb546915d0f41">ExifTag</a> <a class="code" href="struct__ExifEntry.html#aa03a4dc9fa98c8bbc447c19a4d0536e9">tag</a>;</div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  </div><div class="line"><a name="l00048"></a><span class="lineno"><a class="line" href="struct__ExifEntry.html#a6129f19697eff3ab581e0a8455d9fbae"> 48</a></span>  <a class="code" href="exif-format_8h.html#a761152047d73b4a9fcdc4e2051b817d2">ExifFormat</a> <a class="code" href="struct__ExifEntry.html#a6129f19697eff3ab581e0a8455d9fbae">format</a>;</div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span> </div><div class="line"><a name="l00052"></a><span class="lineno"><a class="line" href="struct__ExifEntry.html#a4d1cd87a5c3f43b3d14b087a44582c06"> 52</a></span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> <a class="code" href="struct__ExifEntry.html#a4d1cd87a5c3f43b3d14b087a44582c06">components</a>;</div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span> </div><div class="line"><a name="l00057"></a><span class="lineno"><a class="line" href="struct__ExifEntry.html#a7fd255a932578e60a5fbaac47d4362d4"> 57</a></span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *<a class="code" href="struct__ExifEntry.html#a7fd255a932578e60a5fbaac47d4362d4">data</a>;</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span> </div><div class="line"><a name="l00061"></a><span class="lineno"><a class="line" href="struct__ExifEntry.html#afee38ed13748497cc838b3c746ff8559"> 61</a></span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="struct__ExifEntry.html#afee38ed13748497cc838b3c746ff8559">size</a>;</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span> </div><div class="line"><a name="l00065"></a><span class="lineno"><a class="line" href="struct__ExifEntry.html#a6a4cb064a2c7d60f3fd439e2b3cab2a6"> 65</a></span>  <a class="code" href="struct__ExifContent.html">ExifContent</a> *<a class="code" href="struct__ExifEntry.html#a6a4cb064a2c7d60f3fd439e2b3cab2a6">parent</a>;</div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span> </div><div class="line"><a name="l00068"></a><span class="lineno"><a class="line" href="struct__ExifEntry.html#ab596479b192bc474d77a98600d4201e2"> 68</a></span>  ExifEntryPrivate *<a class="code" href="struct__ExifEntry.html#ab596479b192bc474d77a98600d4201e2">priv</a>;</div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span> };</div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span> </div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span> <span class="comment">/* Lifecycle */</span></div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span> </div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span> <a class="code" href="struct__ExifEntry.html">ExifEntry</a> *<a class="code" href="exif-entry_8h.html#a81d54ed31654fc76331ca493a2a35633">exif_entry_new</a> (<span class="keywordtype">void</span>);</div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span> </div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <a class="code" href="struct__ExifEntry.html">ExifEntry</a> *<a class="code" href="exif-entry_8h.html#a3f8eb4f2fce7c69d0897cb35261a70f6">exif_entry_new_mem</a> (<a class="code" href="exif-mem_8h.html#aab8aacbc0ed6f11a1f022b7b1bf4750e">ExifMem</a> *);</div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span> </div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span> <span class="keywordtype">void</span> <a class="code" href="exif-entry_8h.html#a83995c571cabed5171d6193bbef111bc">exif_entry_ref</a> (<a class="code" href="struct__ExifEntry.html">ExifEntry</a> *entry);</div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span> </div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span> <span class="keywordtype">void</span> <a class="code" href="exif-entry_8h.html#ad983a948211cb7de95c8fc52049f1bab">exif_entry_unref</a> (<a class="code" href="struct__ExifEntry.html">ExifEntry</a> *entry);</div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span> </div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span> <span class="keywordtype">void</span> <a class="code" href="exif-entry_8h.html#a3ed3eba673475efc0625741cf5bf6d33">exif_entry_free</a> (<a class="code" href="struct__ExifEntry.html">ExifEntry</a> *entry);</div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span> </div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span> <span class="keywordtype">void</span> <a class="code" href="exif-entry_8h.html#ad7f9e3fd0fde760c332dfbef208589ed">exif_entry_initialize</a> (<a class="code" href="struct__ExifEntry.html">ExifEntry</a> *e, <a class="code" href="exif-tag_8h.html#a1a0ded93d47585f6889eb546915d0f41">ExifTag</a> <a class="code" href="struct__ExifEntry.html#aa03a4dc9fa98c8bbc447c19a4d0536e9">tag</a>);</div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span> </div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span> <span class="keywordtype">void</span> <a class="code" href="exif-entry_8h.html#a34e2cc8e5cbb928a55cd16de9ce71edf">exif_entry_fix</a> (<a class="code" href="struct__ExifEntry.html">ExifEntry</a> *entry);</div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span> </div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span> </div><div class="line"><a name="l00143"></a><span class="lineno"> 143</span> <span class="comment">/* For your convenience */</span></div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span> </div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span> <span class="keyword">const</span> <span class="keywordtype">char</span> *<a class="code" href="exif-entry_8h.html#a24425f48dd75ec56f9ac758aaa6ef9c4">exif_entry_get_value</a> (<a class="code" href="struct__ExifEntry.html">ExifEntry</a> *entry, <span class="keywordtype">char</span> *val,</div><div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> maxlen);</div><div class="line"><a name="l00165"></a><span class="lineno"> 165</span> </div><div class="line"><a name="l00172"></a><span class="lineno"> 172</span> <span class="keywordtype">void</span> <a class="code" href="exif-entry_8h.html#a6d607d079472d7f5eed040c8f081406a">exif_entry_dump</a> (<a class="code" href="struct__ExifEntry.html">ExifEntry</a> *entry, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> indent);</div><div class="line"><a name="l00173"></a><span class="lineno"> 173</span> </div><div class="line"><a name="l00179"></a><span class="lineno"><a class="line" href="exif-entry_8h.html#ae12a25769109d2339461b48c65637a64"> 179</a></span> <span class="preprocessor">#define exif_entry_get_ifd(e) ((e)?exif_content_get_ifd((e)->parent):EXIF_IFD_COUNT)</span></div><div class="line"><a name="l00180"></a><span class="lineno"> 180</span> </div><div class="line"><a name="l00181"></a><span class="lineno"> 181</span> <span class="preprocessor">#ifdef __cplusplus</span></div><div class="line"><a name="l00182"></a><span class="lineno"> 182</span> }</div><div class="line"><a name="l00183"></a><span class="lineno"> 183</span> <span class="preprocessor">#endif </span><span class="comment">/* __cplusplus */</span><span class="preprocessor"></span></div><div class="line"><a name="l00184"></a><span class="lineno"> 184</span> </div><div class="line"><a name="l00185"></a><span class="lineno"> 185</span> <span class="preprocessor">#endif </span><span class="comment">/* __EXIF_ENTRY_H__ */</span><span class="preprocessor"></span></div><div class="ttc" id="struct__ExifEntry_html_ab596479b192bc474d77a98600d4201e2"><div class="ttname"><a href="struct__ExifEntry.html#ab596479b192bc474d77a98600d4201e2">_ExifEntry::priv</a></div><div class="ttdeci">ExifEntryPrivate * priv</div><div class="ttdoc">Internal data to be used by libexif itself. </div><div class="ttdef"><b>Definition:</b> exif-entry.h:68</div></div>
<div class="ttc" id="exif-entry_8h_html_a24425f48dd75ec56f9ac758aaa6ef9c4"><div class="ttname"><a href="exif-entry_8h.html#a24425f48dd75ec56f9ac758aaa6ef9c4">exif_entry_get_value</a></div><div class="ttdeci">const char * exif_entry_get_value(ExifEntry *entry, char *val, unsigned int maxlen)</div><div class="ttdoc">Return a localized textual representation of the value of the EXIF entry. </div><div class="ttdef"><b>Definition:</b> exif-entry.c:830</div></div>
<div class="ttc" id="struct__ExifContent_html"><div class="ttname"><a href="struct__ExifContent.html">_ExifContent</a></div><div class="ttdef"><b>Definition:</b> exif-content.h:40</div></div>
<div class="ttc" id="exif-tag_8h_html_a1a0ded93d47585f6889eb546915d0f41"><div class="ttname"><a href="exif-tag_8h.html#a1a0ded93d47585f6889eb546915d0f41">ExifTag</a></div><div class="ttdeci">ExifTag</div><div class="ttdoc">EXIF tags. </div><div class="ttdef"><b>Definition:</b> exif-tag.h:34</div></div>
<div class="ttc" id="struct__ExifEntry_html_a6a4cb064a2c7d60f3fd439e2b3cab2a6"><div class="ttname"><a href="struct__ExifEntry.html#a6a4cb064a2c7d60f3fd439e2b3cab2a6">_ExifEntry::parent</a></div><div class="ttdeci">ExifContent * parent</div><div class="ttdoc">ExifContent containing this entry. </div><div class="ttdef"><b>Definition:</b> exif-entry.h:65</div></div>
<div class="ttc" id="exif-entry_8h_html_a83995c571cabed5171d6193bbef111bc"><div class="ttname"><a href="exif-entry_8h.html#a83995c571cabed5171d6193bbef111bc">exif_entry_ref</a></div><div class="ttdeci">void exif_entry_ref(ExifEntry *entry)</div><div class="ttdoc">Increase reference counter for ExifEntry. </div><div class="ttdef"><b>Definition:</b> exif-entry.c:137</div></div>
<div class="ttc" id="struct__ExifEntry_html"><div class="ttname"><a href="struct__ExifEntry.html">_ExifEntry</a></div><div class="ttdoc">Data found in one EXIF tag. </div><div class="ttdef"><b>Definition:</b> exif-entry.h:43</div></div>
<div class="ttc" id="exif-mem_8h_html_aab8aacbc0ed6f11a1f022b7b1bf4750e"><div class="ttname"><a href="exif-mem_8h.html#aab8aacbc0ed6f11a1f022b7b1bf4750e">ExifMem</a></div><div class="ttdeci">struct _ExifMem ExifMem</div><div class="ttdoc">ExifMem define a memory allocator. </div><div class="ttdef"><b>Definition:</b> exif-mem.h:57</div></div>
<div class="ttc" id="exif-entry_8h_html_a3ed3eba673475efc0625741cf5bf6d33"><div class="ttname"><a href="exif-entry_8h.html#a3ed3eba673475efc0625741cf5bf6d33">exif_entry_free</a></div><div class="ttdeci">void exif_entry_free(ExifEntry *entry)</div><div class="ttdoc">Actually free the ExifEntry. </div><div class="ttdef"><b>Definition:</b> exif-entry.c:155</div></div>
<div class="ttc" id="exif-format_8h_html_a761152047d73b4a9fcdc4e2051b817d2"><div class="ttname"><a href="exif-format_8h.html#a761152047d73b4a9fcdc4e2051b817d2">ExifFormat</a></div><div class="ttdeci">ExifFormat</div><div class="ttdoc">EXIF tag data formats. </div><div class="ttdef"><b>Definition:</b> exif-format.h:32</div></div>
<div class="ttc" id="exif-entry_8h_html_a3f8eb4f2fce7c69d0897cb35261a70f6"><div class="ttname"><a href="exif-entry_8h.html#a3f8eb4f2fce7c69d0897cb35261a70f6">exif_entry_new_mem</a></div><div class="ttdeci">ExifEntry * exif_entry_new_mem(ExifMem *)</div><div class="ttdoc">Reserve memory for and initialize new ExifEntry using the specified memory allocator. </div><div class="ttdef"><b>Definition:</b> exif-entry.c:120</div></div>
<div class="ttc" id="struct__ExifEntry_html_aa03a4dc9fa98c8bbc447c19a4d0536e9"><div class="ttname"><a href="struct__ExifEntry.html#aa03a4dc9fa98c8bbc447c19a4d0536e9">_ExifEntry::tag</a></div><div class="ttdeci">ExifTag tag</div><div class="ttdoc">EXIF tag for this entry. </div><div class="ttdef"><b>Definition:</b> exif-entry.h:45</div></div>
<div class="ttc" id="exif-format_8h_html"><div class="ttname"><a href="exif-format_8h.html">exif-format.h</a></div><div class="ttdoc">Handling native EXIF data types. </div></div>
<div class="ttc" id="exif-entry_8h_html_a34e2cc8e5cbb928a55cd16de9ce71edf"><div class="ttname"><a href="exif-entry_8h.html#a34e2cc8e5cbb928a55cd16de9ce71edf">exif_entry_fix</a></div><div class="ttdeci">void exif_entry_fix(ExifEntry *entry)</div><div class="ttdoc">Fix the type or format of the given EXIF entry to bring it into spec. </div><div class="ttdef"><b>Definition:</b> exif-entry.c:196</div></div>
<div class="ttc" id="exif-entry_8h_html_ad983a948211cb7de95c8fc52049f1bab"><div class="ttname"><a href="exif-entry_8h.html#ad983a948211cb7de95c8fc52049f1bab">exif_entry_unref</a></div><div class="ttdeci">void exif_entry_unref(ExifEntry *entry)</div><div class="ttdoc">Decrease reference counter for ExifEntry. </div><div class="ttdef"><b>Definition:</b> exif-entry.c:145</div></div>
<div class="ttc" id="exif-entry_8h_html_a81d54ed31654fc76331ca493a2a35633"><div class="ttname"><a href="exif-entry_8h.html#a81d54ed31654fc76331ca493a2a35633">exif_entry_new</a></div><div class="ttdeci">ExifEntry * exif_entry_new(void)</div><div class="ttdoc">Reserve memory for and initialize a new ExifEntry. </div><div class="ttdef"><b>Definition:</b> exif-entry.c:109</div></div>
<div class="ttc" id="struct__ExifEntry_html_a7fd255a932578e60a5fbaac47d4362d4"><div class="ttname"><a href="struct__ExifEntry.html#a7fd255a932578e60a5fbaac47d4362d4">_ExifEntry::data</a></div><div class="ttdeci">unsigned char * data</div><div class="ttdoc">Pointer to the raw EXIF data for this entry. </div><div class="ttdef"><b>Definition:</b> exif-entry.h:57</div></div>
<div class="ttc" id="exif-mem_8h_html"><div class="ttname"><a href="exif-mem_8h.html">exif-mem.h</a></div><div class="ttdoc">Define the ExifMem data type and the associated functions. </div></div>
<div class="ttc" id="exif-entry_8h_html_ad7f9e3fd0fde760c332dfbef208589ed"><div class="ttname"><a href="exif-entry_8h.html#ad7f9e3fd0fde760c332dfbef208589ed">exif_entry_initialize</a></div><div class="ttdeci">void exif_entry_initialize(ExifEntry *e, ExifTag tag)</div><div class="ttdoc">Initialize an empty ExifEntry with default data in the correct format for the given tag...</div><div class="ttdef"><b>Definition:</b> exif-entry.c:1408</div></div>
<div class="ttc" id="struct__ExifEntry_html_a4d1cd87a5c3f43b3d14b087a44582c06"><div class="ttname"><a href="struct__ExifEntry.html#a4d1cd87a5c3f43b3d14b087a44582c06">_ExifEntry::components</a></div><div class="ttdeci">unsigned long components</div><div class="ttdoc">Number of elements in the array, if this is an array entry. </div><div class="ttdef"><b>Definition:</b> exif-entry.h:52</div></div>
<div class="ttc" id="exif-content_8h_html"><div class="ttname"><a href="exif-content_8h.html">exif-content.h</a></div><div class="ttdoc">Handling EXIF IFDs. </div></div>
<div class="ttc" id="exif-entry_8h_html_a6d607d079472d7f5eed040c8f081406a"><div class="ttname"><a href="exif-entry_8h.html#a6d607d079472d7f5eed040c8f081406a">exif_entry_dump</a></div><div class="ttdeci">void exif_entry_dump(ExifEntry *entry, unsigned int indent)</div><div class="ttdoc">Dump text representation of ExifEntry to stdout. </div><div class="ttdef"><b>Definition:</b> exif-entry.c:592</div></div>
<div class="ttc" id="struct__ExifEntry_html_a6129f19697eff3ab581e0a8455d9fbae"><div class="ttname"><a href="struct__ExifEntry.html#a6129f19697eff3ab581e0a8455d9fbae">_ExifEntry::format</a></div><div class="ttdeci">ExifFormat format</div><div class="ttdoc">Type of data in this entry. </div><div class="ttdef"><b>Definition:</b> exif-entry.h:48</div></div>
<div class="ttc" id="struct__ExifEntry_html_afee38ed13748497cc838b3c746ff8559"><div class="ttname"><a href="struct__ExifEntry.html#afee38ed13748497cc838b3c746ff8559">_ExifEntry::size</a></div><div class="ttdeci">unsigned int size</div><div class="ttdoc">Number of bytes in the buffer at data. </div><div class="ttdef"><b>Definition:</b> exif-entry.h:61</div></div>
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