devdocs/elisp/markers.html


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 <h2 class="chapter">Markers</h2>  <p>A <em>marker</em> is a Lisp object used to specify a position in a buffer relative to the surrounding text. A marker changes its offset from the beginning of the buffer automatically whenever text is inserted or deleted, so that it stays with the two characters on either side of it. </p> <table class="menu" border="0" cellspacing="0"> <tr>
<td align="left" valign="top">• <a href="overview-of-markers" accesskey="1">Overview of Markers</a>
</td>
<td> </td>
<td align="left" valign="top">The components of a marker, and how it relocates. </td>
</tr> <tr>
<td align="left" valign="top">• <a href="predicates-on-markers" accesskey="2">Predicates on Markers</a>
</td>
<td> </td>
<td align="left" valign="top">Testing whether an object is a marker. </td>
</tr> <tr>
<td align="left" valign="top">• <a href="creating-markers" accesskey="3">Creating Markers</a>
</td>
<td> </td>
<td align="left" valign="top">Making empty markers or markers at certain places. </td>
</tr> <tr>
<td align="left" valign="top">• <a href="information-from-markers" accesskey="4">Information from Markers</a>
</td>
<td> </td>
<td align="left" valign="top">Finding the marker’s buffer or character position. </td>
</tr> <tr>
<td align="left" valign="top">• <a href="marker-insertion-types" accesskey="5">Marker Insertion Types</a>
</td>
<td> </td>
<td align="left" valign="top">Two ways a marker can relocate when you insert where it points. </td>
</tr> <tr>
<td align="left" valign="top">• <a href="moving-markers" accesskey="6">Moving Markers</a>
</td>
<td> </td>
<td align="left" valign="top">Moving the marker to a new buffer or position. </td>
</tr> <tr>
<td align="left" valign="top">• <a href="the-mark" accesskey="7">The Mark</a>
</td>
<td> </td>
<td align="left" valign="top">How the mark is implemented with a marker. </td>
</tr> <tr>
<td align="left" valign="top">• <a href="the-region" accesskey="8">The Region</a>
</td>
<td> </td>
<td align="left" valign="top">How to access the region. </td>
</tr> </table><div class="_attribution">
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    Copyright &copy; 1990-1996, 1998-2022 Free Software Foundation, Inc. <br>Licensed under the GNU GPL license.<br>
    <a href="https://www.gnu.org/software/emacs/manual/html_node/elisp/Markers.html" class="_attribution-link">https://www.gnu.org/software/emacs/manual/html_node/elisp/Markers.html</a>
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