The purpose of this utility is to provide a venue for performing tasks that do not need addressed as part of ServiceDesk's daily operation.  Creating a Invoice-Format-Instruction file, for example (see page 278), is something you'll generally need to do but once.  Creating your list of Yellow Page ads is a once-yearly task.  SD-Tools is designed to assist you in tasks such as these, and need be run only when you are performing them (as specifically addressed in the Appendix).  For all other times, SD-Tools is a program you'll leave dormant.