This tag must appear at or near the beginning of every server response file that is to be processed by BIS. It indicates that this particular .srf file contains Xcentrisity BIS rendering tags.
handler *
The handler tag's parameter indicates the name of the handler to be invoked to render the tags within the stencil, with * indicating the default tag handler. In this release of BIS, the only supported handler tag is the default, so {{ Handler * }} is the recommended format of this tag.
Future versions of BIS may support additional handlers.