Output Adapter Map File XML Syntax

The syntax of the map file for a Reuters OMM output adapter.

adapter                       (required, limit one)
  |----rfa                               (required, limit one)
  '----subscriptions                     (required, limit one)
         '----subscription               (required)
                '----stream              (required)
                       |----name         (required, limit one)
                       |----stale        (optional)
                       |----field        (required)
                       '----constant     (optional)