46 SAP FI/CO (Q UESTIONS AND A NSWERS ) 3. Cross-Application Components (ALE, Time sheet, CATT, CAD integration, DM-Document Management, EDI, Engineering Change Management (ECM), etc.) 4. Functional Area Settings (FI, CO, Logistics, PP, PM, QM, etc.) 69. Explain the various `Types' of IMGs. The SAP Reference IMG provides all the customizing steps for all functional areas of SAP. This, as the name suggests, is the `reference IMG' from which you may create your own IMG to meet the exact requirements of the (1) enterprise and (2) project. The Enterprise IMG is usually an exact copy of the `SAP Reference IMG,' but limited to the countries where the implementation is carried out. From the Enterprise IMG, you may create your Project IMG, which will contain the