Like the Service Level information, Top Layer information is defined via global catalog elements. That is, it is specified in the Globals element of the catalog configuration file (catalogs.xml). The following information may be defined for the top layer:
| Info | Description |
|---|---|
| Title | This is the title of the top layer. The value of this may be specified via the wms:Layer global catalog element. |
| Authority URL | This defines an external URL that is associated with the layer. The value of this may be specified via the wms:Layer global catalog element. |
Here is an example of the Layer element:
<wms:Layer>
<wms:Title>Express Server Top Layer</wms:Title>
<wms:CRS>EPSG:4326</wms:CRS>
<wms:AuthorityURL name="ESAuthority">
<wms:OnlineResource xlink:href="http://sea-ra-bo114"/>
</wms:AuthorityURL>
</wms:Layer>