A choice between describing how to build the project <build> or providing the location of a pre-built <executable> These two are mutually exclusive. Describes the way to build the product from source, using TPDs. Override configuration settings in TPDs Specifies the location of an already built executable Describes how to run the test. There can be at most one "Run" which may contain various runners Describes a referenced project Optional name of the project. Can be used as reference in the TXD itself. The TPD is identified by the "path" attribute, below. This is the filename of the TPD file. Paths are relative to the TXD itself, or absolute.