Test environment information captures the surroundings or conditions of one or more laboratories. It contains the basic information pertaining to a laboratory, the information related to supported languages and the input item information. The language information and input item information can be shared by multiple laboratories. A list of languages supported a list of languages supported LaboratoryCollection element contains an unbounded set of child Laboratory element. Each Laboratory element contains the organization and capacity information for one laboratory. The laboratory information consists of navigation information and test unit information Navigation information reveals the location of one laboratory in the organization structure of an enterprise. It can be displayed in a tree form to facilitate user operations. A path that starts with the root node and ends with itself indicates the affiliation of the laboratory. Test unit information contains a list of test units that describe the test capacity of one laboratory. It is composed of an unbounded set of child InputItem element. In an XML instance document, this branch shall be used to capture properties of household appliances and description information for one test. Each InputItem element represents a class of description for one test. It has the default content and the content varies with different tests.