6. Total Commitments means as of the Final Closing Date of the Partnership, the aggregate Commitments. Treasury Regulations means the final, temporary or proposed Treasury Regulations promulgated under the Code, as such regulations may be amended from time to time (including corresponding provisions of succeeding regulations). Two-thirds in Interest of the Limited Partners means Limited Partners holding two-thirds or more of the Limited Partners' Voting Interests. UBTI means unrelated business taxable income as that term is defined in Section 512 of the Code. Unfunded Commitment means, with respect to any Partner as of any date, (a) the excess, if any, of (1) the amount of such Partner's Commitment, over (11) such Partner's aggregate Capital Contnbutions previously made plus (b) all Permitted Reinvestment Amounts with respect to such Partner as of such date; so long as, notwithstanding any of the foregoing, the total Capital Contnbutions by any Partner shall not exceed 110% of such Partner's Commitment. Unit means a limited partner interest in the Partnership representing a contribution (or a combination of actual contribution and commitment to contribute) in cash in the amount of $100,000 to the capital of the Partnership by a Limited Partner, as such. The Partnership may issue fractional Units. Venture Capital Operating Company means a venture capital operating company within the meaning of the regulations of the Department of Labor (29 CFR Section 2510.3401(d)). Voting Interest shall mean all interests of a Limited Partner other than a Non-Voting Interest. 59