The File Designer, accessed through the workspace's Data view, is used to create, view, and modify data layout files. The designer interface consists of five tabbed screens:
To open the File Designer, you must either create a new data layout file (as described in Creating a DLT from Scratch through Creating DLTs from Multiple FDSL Pairs) or open an existing data layout file. To open an existing DLT, go to the Data view and double-click the DLT name. You can also right-click the project node and select Open data_layout_name from the pop-up menu.