File: //usr/share/inkscape/extensions/docinfo.inx
<?xml version="1.0" encoding="UTF-8"?>
<inkscape-extension xmlns="http://www.inkscape.org/namespace/inkscape/extension">
<_name>DOC Info</_name>
<id>org.inkscape.docinfo</id>
<dependency type="executable" location="extensions">dpiswitcher.py</dependency>
<dependency type="executable" location="extensions">inkex.py</dependency>
<param name="action" type="notebook" gui-hidden="true">
<page name="page_info" _gui-text="Show page info">
<_param name="d" type="description">Choose this tab if you would like to see page info previously to apply DPI Switcher.</_param>
</page>
</param>
<effect needs-live-preview="false">
<object-type>all</object-type>
<effects-menu>
<submenu _name="Document"/>
</effects-menu>
</effect>
<script>
<command reldir="extensions" interpreter="python">dpiswitcher.py</command>
</script>
</inkscape-extension>