Examples in this directory are sample files that you can right click from the files list in uCalc Transform.  You may also try right-clicking some of your own files that have one of those extensions.  The right-click actions are defined in files found in the uCalcTransform\FileTypes\ directory.  The name of each file in that directory represents a supported file extention.  The file itself contains the definition.  Definitions call on transforms that are found in the uCalcTransform\Transforms\ directory.  Data used by those transforms (if any) are placed in the uCalcTransform\Data directory.