Form 1065: U.S. Return of Partnership Income. Header reads 'Form 1065' and 'U.S. Return of Partnership Income.' The annual informational return filed by partnerships (general, limited, LLCs taxed as partnerships); shows total income, deductions, and partners' shares. The Form 1065 subdocument generally includes the entire core return packet: the two main pages plus the internal schedules commonly printed as part of the form (Schedule B, Schedule K, Schedule L, Schedule M-1, and Schedule M-2) when they appear as the continuation pages of the same Form 1065. Only split these schedules into their own subdocuments when they are clearly presented as standalone schedule packets outside the core Form 1065 page sequence (e.g., a separately collated 'Schedule K (Form 1065)' or 'Schedule L (Form 1065)' section that is not part of the primary Form 1065 pagination). Do not include software-generated 'Additional Data' or supporting statement pages in the Form 1065 subdocument; those are supplements.