Data-driven mode: the data itself governs the resulting XML; tree and sub-trees of the desired format are opened and closed driven by content
An Excel workbook can run any number of configurations and thus generate one or more XML structures (from data all over the workbook) with the click of a button.
Take theof a trader calculating volatility smile in Excel and wishing to import the curve to Murex (via an MDRS instance) or make these available to the Murex real-time chain (via the MDCS instance), and all this without having to change the data layout in the Excel workbook.
EXCMEL can be configured to generate the required Murex XML format. Any data layout in Excel can be converted to any MdML or FgML. (For that matter, EXCMEL can be configured to generate MxML format for the Trade Repository or the Statics Repository as well.)