At a leading edge semiconductor Integrated Device Manufacturer (IDM) the department of product engineering widely uses the Cornerstone statistical software from camLine. Cornerstone provides statistical techniques, including DoE, regression, and multivariate analysis. Cornerstone enables engineers of multiple areas – i. e. teams from manufacturing, research, development, quality assurance, and educational organizations – to fully exploit and apply the potential of statistical data analysis with a highly intuitive and interactive user interface. Implementing an internal tool based on the Cornerstone Extension Language (CEL), the manufacturer analyzes yield, performs yield learning and characterizes products. In the following sections we describe the major features helping the customer to work fast, consistent, efficient and to the highest quality standards.