Add IDs to some examples/tables.

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@20041 b3059339-0415-0410-9bf9-f77b7e298cf2

DOCS/xml/en/mencoder.xml

@@ -314,7 +314,7 @@ time you heard about this, you should consult some guides available on the
 net.
 </para>
 
-<example>
+<example id="copy_audio_track">
 <title>copy audio track</title>
 <para>
 Two pass encode of the second track a DVD to an MPEG-4 (&quot;DivX&quot;)
@@ -326,7 +326,7 @@ mencoder dvd://2 -ovc lavc -lavcopts vcodec=mpeg4:mbd=2:trell:vpass=2 -oac copy
 </para>
 </example>
 
-<example>
+<example id="encode_audio_track">
 <title>encode audio track</title>
 <para>
 Two pass encode of a DVD to an MPEG-4 (&quot;DivX&quot;) AVI while encoding
@@ -370,8 +370,8 @@ mencoder dvd://2 -ovc lavc -lavcopts vcodec=mpeg4:mbd=2:trell:vpass=2 -oac mp3la
 </itemizedlist>
 </para>
 
-<example>
-<title>Example</title>
+<example id="encode_for_psp">
+<title>encode for PSP</title>
 <para>
 <screen>
 mencoder -oac lavc -ovc lavc -of lavf -lavcopts aglobal=1:vglobal=1:vcodec=mpeg4:acodec=aac \
@@ -648,7 +648,7 @@ and <filename>.sub</filename> files already exist. So you should remove any
 before starting.
 </para>
 
-<example>
+<example id="copying_two_subtitles_from_a_dvd_while_doing_two_pass_encoding">
 <title>Copying two subtitles from a DVD while doing two pass encoding</title>
 <screen>
 rm subtitles.idx subtitles.sub
@@ -657,7 +657,7 @@ mencoder dvd://1 -oac copy -ovc lavc -lavcopts vcodec=mpeg4:mbd=2:trell:vpass=2
 --></screen>
 </example>
 
-<example>
+<example id="copying_a_french_subtitle_from_an_mpeg_file">
 <title>Copying a french subtitle from an MPEG file</title>
 <screen>
 rm subtitles.idx subtitles.sub

DOCS/xml/en/usage.xml

@@ -256,7 +256,7 @@ and a full list of available commands by running
 <command>mplayer -input cmdlist</command>.
 </para>
 
-<example>
+<example id="input_control_file">
 <title>A simple input control file</title>
 <programlisting>
 ##

DOCS/xml/en/video.xml

@@ -662,7 +662,7 @@ present) black bar.
 </varlistentry>
 </variablelist>
 
-<table>
+<table id="sdl_only_keys">
 <title>SDL only keys</title>
 <tgroup cols="2">
 <thead>