Константин Константинович Берлинский - Silver Bullets Toolkit стр 4.

There is no a product supporting this methodology. And it is likely to be the most important benefit. Indeed, you will not consider a text editor or source safe tool as a XP-product.

5.3. SADT- Structured Analysis and Design Technique

It is known as a creation of the company SofTech or as a functional variant in a government version (IDEF0). It has been employing since 1973 in different branches of activity such as business, industry, defense, communication and design planning. Diagrams within the IDEF0 standard take undoubted benefits for functional system modeling. However, the approach to provide system modules as boxes with input, output and control data reveals only high-level structure peculiarities of the system