Watermark selector. Specifies the catalog::Id of the catalog record to be used as a watermark image or template.
If specified, the server applies the watermark to the requested image data for all image requests (
Text string. If specified, must be a valid
Catalog::Id value in this image catalog (or in the default catalog, if specified in default.ini).
default::Watermark if not defined. If defined but empty, no watermarking is applied for this image catalog, even if
default::Watermark is defined.