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<a href="#telepathy-glib-dtmf.synopsis" class="shortcut">Top</a>
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<a href="#telepathy-glib-dtmf.description" class="shortcut">Description</a>
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<a href="#telepathy-glib-dtmf.object-hierarchy" class="shortcut">Object Hierarchy</a>
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<a href="#telepathy-glib-dtmf.signals" class="shortcut">Signals</a>
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<a name="telepathy-glib-dtmf"></a><div class="titlepage"></div>
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<h2><span class="refentrytitle"><a name="telepathy-glib-dtmf.top_of_page"></a>DTMF dialstring interpreter</span></h2>
<p>DTMF dialstring interpreter — Converts a dialstring into a timed sequence of events</p>
</td>
<td valign="top" align="right"></td>
</tr></table></div>
<div class="refsynopsisdiv">
<a name="telepathy-glib-dtmf.synopsis"></a><h2>Synopsis</h2>
<a name="TpDTMFPlayer"></a><pre class="synopsis">
#include <telepathy-glib/telepathy-glib.h>
struct <a class="link" href="telepathy-glib-dtmf.html#TpDTMFPlayer-struct" title="struct TpDTMFPlayer">TpDTMFPlayer</a>;
<a class="link" href="telepathy-glib-dtmf.html#TpDTMFPlayer"><span class="returnvalue">TpDTMFPlayer</span></a> * <a class="link" href="telepathy-glib-dtmf.html#tp-dtmf-player-new" title="tp_dtmf_player_new ()">tp_dtmf_player_new</a> (<em class="parameter"><code><span class="type">void</span></code></em>);
<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> <a class="link" href="telepathy-glib-dtmf.html#tp-dtmf-player-play" title="tp_dtmf_player_play ()">tp_dtmf_player_play</a> (<em class="parameter"><code><a class="link" href="telepathy-glib-dtmf.html#TpDTMFPlayer"><span class="type">TpDTMFPlayer</span></a> *self</code></em>,
<em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *tones</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> tone_ms</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> gap_ms</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> pause_ms</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);
<span class="returnvalue">void</span> <a class="link" href="telepathy-glib-dtmf.html#tp-dtmf-player-cancel" title="tp_dtmf_player_cancel ()">tp_dtmf_player_cancel</a> (<em class="parameter"><code><a class="link" href="telepathy-glib-dtmf.html#TpDTMFPlayer"><span class="type">TpDTMFPlayer</span></a> *self</code></em>);
<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> <a class="link" href="telepathy-glib-dtmf.html#tp-dtmf-player-is-active" title="tp_dtmf_player_is_active ()">tp_dtmf_player_is_active</a> (<em class="parameter"><code><a class="link" href="telepathy-glib-dtmf.html#TpDTMFPlayer"><span class="type">TpDTMFPlayer</span></a> *self</code></em>);
</pre>
</div>
<div class="refsect1">
<a name="telepathy-glib-dtmf.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="synopsis">
<a href="http://library.gnome.org/devel/gobject/unstable/gobject-The-Base-Object-Type.html#GObject">GObject</a>
+----TpDTMFPlayer
</pre>
</div>
<div class="refsect1">
<a name="telepathy-glib-dtmf.signals"></a><h2>Signals</h2>
<pre class="synopsis">
"<a class="link" href="telepathy-glib-dtmf.html#TpDTMFPlayer-finished" title='The "finished" signal'>finished</a>" : <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS"><code class="literal">Run Last</code></a>
"<a class="link" href="telepathy-glib-dtmf.html#TpDTMFPlayer-started-tone" title='The "started-tone" signal'>started-tone</a>" : <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS"><code class="literal">Run Last</code></a>
"<a class="link" href="telepathy-glib-dtmf.html#TpDTMFPlayer-stopped-tone" title='The "stopped-tone" signal'>stopped-tone</a>" : <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS"><code class="literal">Run Last</code></a>
"<a class="link" href="telepathy-glib-dtmf.html#TpDTMFPlayer-tones-deferred" title='The "tones-deferred" signal'>tones-deferred</a>" : <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS"><code class="literal">Run Last</code></a>
</pre>
</div>
<div class="refsect1">
<a name="telepathy-glib-dtmf.description"></a><h2>Description</h2>
<p>
Telepathy offers two APIs for DTMF events: user interfaces can either
call the StartTone and StopTone methods (appropriate if the user is
pressing hardware or on-screen buttons in real time), or call
MultipleTones or set InitialTones (appropriate if a stored dialstring
is in use).
</p>
<p>
<a class="link" href="telepathy-glib-dtmf.html#TpDTMFPlayer"><span class="type">TpDTMFPlayer</span></a> provides common code for connection managers that need to
turn MultipleTones or InitialTones received from a UI into a sequence of
start and stop events for the underlying protocol.
</p>
</div>
<div class="refsect1">
<a name="telepathy-glib-dtmf.details"></a><h2>Details</h2>
<div class="refsect2">
<a name="TpDTMFPlayer-struct"></a><h3>struct TpDTMFPlayer</h3>
<pre class="programlisting">struct TpDTMFPlayer;</pre>
<p>
An object to convert a string of characters representing DTMF tones
into timed start and stop events.
</p>
<p>
Typically, a connection manager should instantiate one <a class="link" href="telepathy-glib-dtmf.html#TpDTMFPlayer"><span class="type">TpDTMFPlayer</span></a>
for each StreamedMedia or Call channel that supports DTMF.
</p>
<p>
The <a class="link" href="telepathy-glib-dtmf.html#TpDTMFPlayer-started-tone" title='The "started-tone" signal'><span class="type">"started-tone"</span></a> and <a class="link" href="telepathy-glib-dtmf.html#TpDTMFPlayer-stopped-tone" title='The "stopped-tone" signal'><span class="type">"stopped-tone"</span></a>
signals should be connected to some way to play a tone, either directly
or by emitting signals from the StreamHandler interface.
</p>
<p>
The <a class="link" href="telepathy-glib-dtmf.html#TpDTMFPlayer-tones-deferred" title='The "tones-deferred" signal'><span class="type">"tones-deferred"</span></a> signal should trigger emission of
TonesDeferred.
</p>
<p>
The <a class="link" href="telepathy-glib-dtmf.html#TpDTMFPlayer-finished" title='The "finished" signal'><span class="type">"finished"</span></a> signal indicates that the current sequence
of tones has finished.
</p>
<p class="since">Since 0.13.3</p>
</div>
<hr>
<div class="refsect2">
<a name="tp-dtmf-player-new"></a><h3>tp_dtmf_player_new ()</h3>
<pre class="programlisting"><a class="link" href="telepathy-glib-dtmf.html#TpDTMFPlayer"><span class="returnvalue">TpDTMFPlayer</span></a> * tp_dtmf_player_new (<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
<p>
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody><tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a new DTMF interpreter. <span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span>
</td>
</tr></tbody>
</table></div>
<p class="since">Since 0.13.3</p>
</div>
<hr>
<div class="refsect2">
<a name="tp-dtmf-player-play"></a><h3>tp_dtmf_player_play ()</h3>
<pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> tp_dtmf_player_play (<em class="parameter"><code><a class="link" href="telepathy-glib-dtmf.html#TpDTMFPlayer"><span class="type">TpDTMFPlayer</span></a> *self</code></em>,
<em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *tones</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> tone_ms</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> gap_ms</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> pause_ms</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>
Start to play a sequence of tones, by emitting the
<a class="link" href="telepathy-glib-dtmf.html#TpDTMFPlayer-started-tone" title='The "started-tone" signal'><span class="type">"started-tone"</span></a> and <a class="link" href="telepathy-glib-dtmf.html#TpDTMFPlayer-stopped-tone" title='The "stopped-tone" signal'><span class="type">"stopped-tone"</span></a> signals.
</p>
<p>
If <a class="link" href="telepathy-glib-dtmf.html#tp-dtmf-player-is-active" title="tp_dtmf_player_is_active ()"><code class="function">tp_dtmf_player_is_active()</code></a> would return <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a>, this method raises
<a class="link" href="telepathy-glib-errors.html#TP-ERROR-SERVICE-BUSY:CAPS"><code class="literal">TP_ERROR_SERVICE_BUSY</code></a> and does not play anything, and the previous
sequence continues to play.
</p>
<p>
The recognised characters are 0-9, A-D,
# and * (which play the corresponding DTMF event), P, X and comma (which
each pause for <em class="parameter"><code>pause_ms</code></em> milliseconds), and W
(which stops interpretation of the string and emits
<a class="link" href="telepathy-glib-dtmf.html#TpDTMFPlayer-tones-deferred" title='The "tones-deferred" signal'><span class="type">"tones-deferred"</span></a> with the rest of the string). The
corresponding lower-case letters are also allowed.
If <em class="parameter"><code>tones</code></em> contains any other characters, this method raises
<a class="link" href="telepathy-glib-errors.html#TP-ERROR-INVALID-ARGUMENT:CAPS"><code class="literal">TP_ERROR_INVALID_ARGUMENT</code></a> and does not play anything.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>self</code></em> :</span></p></td>
<td>a DTMF interpreter</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>tones</code></em> :</span></p></td>
<td>a sequence of tones or other events</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>tone_ms</code></em> :</span></p></td>
<td>length of a tone (0-9, A-D, # or *) in milliseconds,
which must be positive; typically 250</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>gap_ms</code></em> :</span></p></td>
<td>length of the gap between two tones, which must be positive;
typically 100</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>pause_ms</code></em> :</span></p></td>
<td>length of the pause produced by P, X or comma, which must be
positive; typically 3000</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>error</code></em> :</span></p></td>
<td>used to raise an error</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>
<a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> on success, <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> (setting <em class="parameter"><code>error</code></em>) on failure</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 0.13.3</p>
</div>
<hr>
<div class="refsect2">
<a name="tp-dtmf-player-cancel"></a><h3>tp_dtmf_player_cancel ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> tp_dtmf_player_cancel (<em class="parameter"><code><a class="link" href="telepathy-glib-dtmf.html#TpDTMFPlayer"><span class="type">TpDTMFPlayer</span></a> *self</code></em>);</pre>
<p>
If tones were being played, stop the current tone (if any),
stop playing subsequent tones, and emit <a class="link" href="telepathy-glib-dtmf.html#TpDTMFPlayer-finished" title='The "finished" signal'><span class="type">"finished"</span></a>.
</p>
<p>
Otherwise, do nothing.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody><tr>
<td><p><span class="term"><em class="parameter"><code>self</code></em> :</span></p></td>
<td>a DTMF interpreter</td>
</tr></tbody>
</table></div>
<p class="since">Since 0.13.3</p>
</div>
<hr>
<div class="refsect2">
<a name="tp-dtmf-player-is-active"></a><h3>tp_dtmf_player_is_active ()</h3>
<pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> tp_dtmf_player_is_active (<em class="parameter"><code><a class="link" href="telepathy-glib-dtmf.html#TpDTMFPlayer"><span class="type">TpDTMFPlayer</span></a> *self</code></em>);</pre>
<p>
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>self</code></em> :</span></p></td>
<td>a DTMF interpreter</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>
<a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if a sequence of tones is currently playing</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 0.13.3</p>
</div>
</div>
<div class="refsect1">
<a name="telepathy-glib-dtmf.signal-details"></a><h2>Signal Details</h2>
<div class="refsect2">
<a name="TpDTMFPlayer-finished"></a><h3>The <code class="literal">"finished"</code> signal</h3>
<pre class="programlisting"><span class="returnvalue">void</span> user_function (<a class="link" href="telepathy-glib-dtmf.html#TpDTMFPlayer"><span class="type">TpDTMFPlayer</span></a> *self,
<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> cancelled,
<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data) : <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS"><code class="literal">Run Last</code></a></pre>
<p>
Emitted when playback stops, either because the end of the
sequence was reached, <a class="link" href="telepathy-glib-dtmf.html#tp-dtmf-player-cancel" title="tp_dtmf_player_cancel ()"><code class="function">tp_dtmf_player_cancel()</code></a> was called, or a 'W'
or 'w' character was encountered.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>self</code></em> :</span></p></td>
<td>the <a class="link" href="telepathy-glib-dtmf.html#TpDTMFPlayer"><span class="type">TpDTMFPlayer</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>cancelled</code></em> :</span></p></td>
<td>
<a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if playback was cancelled with <a class="link" href="telepathy-glib-dtmf.html#tp-dtmf-player-cancel" title="tp_dtmf_player_cancel ()"><code class="function">tp_dtmf_player_cancel()</code></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>user_data</code></em> :</span></p></td>
<td>user data set when the signal handler was connected.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 0.13.3</p>
</div>
<hr>
<div class="refsect2">
<a name="TpDTMFPlayer-started-tone"></a><h3>The <code class="literal">"started-tone"</code> signal</h3>
<pre class="programlisting"><span class="returnvalue">void</span> user_function (<a class="link" href="telepathy-glib-dtmf.html#TpDTMFPlayer"><span class="type">TpDTMFPlayer</span></a> *self,
<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> event,
<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data) : <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS"><code class="literal">Run Last</code></a></pre>
<p>
Emitted at the beginning of each tone.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>self</code></em> :</span></p></td>
<td>the <a class="link" href="telepathy-glib-dtmf.html#TpDTMFPlayer"><span class="type">TpDTMFPlayer</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>event</code></em> :</span></p></td>
<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Type-Information.html#G-TYPE-UINT:CAPS"><code class="literal">G_TYPE_UINT</code></a> representing the tone being played</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>user_data</code></em> :</span></p></td>
<td>user data set when the signal handler was connected.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="TpDTMFPlayer-stopped-tone"></a><h3>The <code class="literal">"stopped-tone"</code> signal</h3>
<pre class="programlisting"><span class="returnvalue">void</span> user_function (<a class="link" href="telepathy-glib-dtmf.html#TpDTMFPlayer"><span class="type">TpDTMFPlayer</span></a> *self,
<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data) : <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS"><code class="literal">Run Last</code></a></pre>
<p>
Emitted at the end of each tone.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>self</code></em> :</span></p></td>
<td>the <a class="link" href="telepathy-glib-dtmf.html#TpDTMFPlayer"><span class="type">TpDTMFPlayer</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>user_data</code></em> :</span></p></td>
<td>user data set when the signal handler was connected.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 0.13.3</p>
</div>
<hr>
<div class="refsect2">
<a name="TpDTMFPlayer-tones-deferred"></a><h3>The <code class="literal">"tones-deferred"</code> signal</h3>
<pre class="programlisting"><span class="returnvalue">void</span> user_function (<a class="link" href="telepathy-glib-dtmf.html#TpDTMFPlayer"><span class="type">TpDTMFPlayer</span></a> *self,
<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *tones,
<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data) : <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS"><code class="literal">Run Last</code></a></pre>
<p>
Emitted just before <a class="link" href="telepathy-glib-dtmf.html#TpDTMFPlayer-finished" title='The "finished" signal'><span class="type">"finished"</span></a> if a 'W' or 'w' character
is encountered before the end of a dial string. The connection
manager is expected to wait for the user to confirm, then call
<a class="link" href="telepathy-glib-dtmf.html#tp-dtmf-player-play" title="tp_dtmf_player_play ()"><code class="function">tp_dtmf_player_play()</code></a> again, using this signal's argument as the new
dial string.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>self</code></em> :</span></p></td>
<td>the <a class="link" href="telepathy-glib-dtmf.html#TpDTMFPlayer"><span class="type">TpDTMFPlayer</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>tones</code></em> :</span></p></td>
<td>the remaining tones, starting from just after the 'W' or 'w'</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>user_data</code></em> :</span></p></td>
<td>user data set when the signal handler was connected.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 0.13.3</p>
</div>
</div>
</div>
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