To change the extent, select a tool button: zoom in, zoom out, pan/move, or info. The remaining buttons are for the whole area, a previous extent, or a following extent respectively. Note that a zoom area can also be defined by dragging an area in the overview map.

The capabilities of the local mapserver can be requested by this link.

The following carto filter blocks are used here:

{carto-filter}
{mappingwidget type="ZoomIn" group="navigation" target="previous"}
{mappingwidget type="ZoomOut" group="navigation" target="previous"}
{mappingwidget type="Move" group="navigation" target="previous"}
{mappingwidget type="Query" group="navigation" target="previous"}
{mappingwidget type="Ruler" target="previous"}
{mappingwidget type="ZoomFull" target="previous"}
{mappingwidget type="ZoomFirst" target="previous"}
{mappingwidget type="ZoomPrevious" target="previous"}
{mappingwidget type="ZoomNext" target="previous"}
{mappingwidget type="ZoomLast" target="previous"}
{/carto-filter}
{carto-filter}
{mappingwidget type="SimpleMap" width="480" height="240"
 service="/cgi-bin/mapserv?map=../htdocs/modules/carto/lib/mappingwidgets/maps/demo-sf.map&version=1.1.1"
 layers="Countries,Borders,Cities"
 extent="-180,-90,180,90" srs="epsg:4326"
 format="image/png"
 query_layers="Cities,Countries"
 info_format="MIME"
 overview="images/world.png"
}
{mappingwidget type="SimpleLegend" width="180" height="240" target="previous"}
{/carto-filter}