A collection of worksheets is called a "workbook". An XMIND workbook may contain more than one sheet, as in spreadsheet software. Data-driven testing is implemented as a Microsoft Excel workbook that can be accessed from UFT. Ambook is an interactive science workbook designed for primary and secondary school students. One limitation is that DIF format cannot handle multiple spreadsheets in a single workbook. XMind 3 saves content in an XMIND Workbook file format. It was anthologized in the classroom workbook "Reading Mastery&colon; Rainbow Edition, Level 2, Storybook 1". This is a study course to be read before the Voudon Gnostic Workbook practicum. His switch to book writing came with "The Screenplay Workbook" in 2003. The Course consists of three sections&colon; the "Text", "Workbook for Students," and "Manual for Teachers". In 2005, McGraw published another best-selling book, "Family First", along with a workbook. Each analysis may include graphical or tabular output and is stored in a separate workbook. A Guided Workbook to Help You Break Free. She is the author of "The Stress Reduction Workbook for Teens". In many ways the Workbook window management model most closely resembles TDI.