Formatting a worksheet using themes and smartart diagrams in Excel 2007: Excel 2007 provides many predefined themes and smartart diagrams that you can use to create lovely worksheets. You can change the font colors and faces quickly and easily according to your needs. Since the themes are shared in all MS-Office applications like Word, Excel and PowerPoint, you can create documents for your business that have similar look. The smartart diagram feature helps the user of Excel to present processes. For example, in our worksheet we have indicated that the cashier has input the data which has been checked by the accounts manager and finally approved by the Vice president (VP). The smartart diagram feature provides many layouts and is divided into categories like: list, process, cycle, hierarchy, relationship, matrix and pyramid as shown in the training video also.