21.   His company makes software tools that help programmers build Windows applications.

22.   I should be forced to wear a dunce cap for not factoring in possible competition when writing about CardioThoracic Systems, which makes tools for minimally invasive heart surgery.

23.   In its suit, Compuware accuses IBM of withholding technical information needed by software developers to make tools that could thrive in the IBM operating system.

24.   Inexpensive power tools often are made of low-grade plastic, which can flex when heated from use or overheat when used on tough jobs.

25.   It is bereft of stone from which to make tools.

26.   Its business is growing fast as it expands from making lab tools to the larger, faster-growing production tool market.

27.   Johanson now believes human ancestors walked on two feet for perhaps millions of years before making tools, and developed large brains even later.

28.   Luminex makes tools that simplify biological testing and that can help in detecting genetic variations and diagnosing diseases.

29.   Next year, working with a radioneurologist, they plan to make tools out of stone themselves while their brains are being imaged by positron emission tomography.

30.   Others, such as Allaire Corp., which makes tools that allow companies to develop interactive Web sites, have announced plans to sell shares to the public.