This practice note provides an introduction to interconnection agreements and their main provisions. This practice note:•explains the purpose of an intercreditor agreement and when an interconnection agreement is used instead of a priority or subordination instrument•provides links to a modification agreement, although intended to amend an existing agreement, it is itself an individual contract. Therefore, the same rules are applicable to the modification agreement as rules of design and interpretation of the contract in its own right. Overall, any dispute related to the change agreement (and such a dispute does not necessarily affect the original agreement) allows bona fide buyers (including tenants and mortgages) to rely exclusively on the legal title. In the case of registered land, this means entries in the property register, since it covers the ownership of the legal order An ad hoc arbitration procedure is any arbitration procedure in which the parties have not chosen an institution to manage the arbitration. This provides the parties with flexibility in conducting the arbitration, but less external support for the process. It may be faster than institutional arbitration, but not so. . . .