The authoring tool that you use also determines how the software deals with changes in downstream data when you retrieve a document. Smart P&ID, Smart Instrumentation, Smart Electrical, and Aspen Basic Engineering analyze the impact of the newly retrieved data on the existing database, and then place tasks on the authoring tool To Do list that allow you to create, delete, or modify items at the appropriate time in the design process. The To Do list gives you the opportunity to view and understand potential changes before accepting, deleting, or modifying those changes. In Smart 3D, you can view the P&ID using the View > P&ID command to pull in the data and correlate items.