Use our IPAC tutorials and instructions for interagency agreement (ILO) forms. This series of 28 short interactive modules, staggered by itself, covers all aspects of IPAC, from a brief introduction to the use of specific functions, including transactions, queries, requirements and mass files. Start with your current needs. Come back to go through other modules, as you need to learn about these functions. . Inter-institutional contract form 7600A – Terms and conditions are comparable to a letter of intent.