The <guilabel>Thumbnails</guilabel> page can be used to define the thumbnail size and activation options
(you can choose the activation control key from &Shift;, &Alt;, and &Ctrl;).
</para>
<note>
<para>
To use the thumbnails feature showing image thumbnails in popups when hovering image items with the mouse pointer, you should enable file underlining for your current profile: <menuchoice><guimenu>Settings</guimenu><guimenuitem>Edit Current Profile...</guimenuitem><guimenuitem>Mouse</guimenuitem><guimenuitem>Miscellaneous</guimenuitem><guimenuitem>Underline files</guimenuitem></menuchoice>.