The Type Browser is used during the creation of an element that requires the specification of a type or element reference. It is used to search for the type of model element you wish to create, for example, the parent of a Domain, the Return Type of an Operation, etc. When you open the Type Browser, you can enter the name of the element to search for, or you can also browse for the element directly in the model. TheModify Search Scope option will control the scope of the search. Searching is based on an index that Rational Software Architect will maintain across sessions and does not require the complete model to be opened. Please note that the first search will be longer due to the creation of this index.