Simply install the plugin with the Extension Manager and an additional icon will appear in your page tools that will enable you to go directly to the DokuWiki editor.

The icon is like the Edit button. Clicking on the button will open the native DokuWiki editor. It opens to the entire page being edited, it does not support section editing.

For users who are not using the DokuWiki template or compatible template, a link can be inserted from the template page using one of the following. Either a button:

<?php  
 global $ID;
 $params = array('do'=>'edit','mode'=>'dwiki',
    'fck_preview_mode'=>'nil');  
 if($REV) { $params['rev'] = $REV; }
 $name = "DW Edit";
 $button = html_btn($name , $ID, "", $params,"post",$name,$name);   
 echo $button;      
?>

Or a link that is inserted directly into the HTML:

<a href="doku.php?id=<?php global $ID; echo $ID;?>&amp;
      do=edit&mode=dwiki&fck_preview_mode=nil"
      class="action edit" rel="nofollow" title="DW Edit">DW Edit</a>