There are other ways to customize PWB besides editing the TOOLS.INI file. For example, you can control a variety of editor functions and options from within PWB with the Editor Settings command from the Options menu.
For more information about customizing the Programmer's WorkBench, see Chapter 3 in this manual, and Chapter 14 of the Programmer's Guide, “Custom-izing the Microsoft Programmer's WorkBench.” For more information about customizing NMAKE and other utilities, see the online reference system or the Programmer's Guide.