## Display Device Driver Reference for OS/2

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### Creating a Test-Case Index File

A test-case index file enables DTT to start up without having to preload all of the test-case DLLs. To create a test-case index file, use the -K command-line option. When the -K command-line option is specified, DTT starts up normally, loading the specified test-case DLLs and index files. Once startup is complete, DTT writes a test-case index file, for all the loaded test cases, to the file specified in the -K command-line option, then terminates.

If the -S command-line option is specified along with the -K option, the new test-case index file always causes DTT to search LIBPATH when loading the DLLs for the test cases in the index. If the -S command-line option is not used with the -K option, the test-case index file contains the full path to each of the DLLs. A new test-case index file has to be created if the test-case DLLs are moved.

If the -S option is specified when creating a test-case index file, LIBPATH is searched to locate test-case DLLs when using that test-case index file.