D.C. Mun. Regs. tit. 11, r. 11-3006
Exhibits may be offered in evidence at the hearing.
Exhibits may be in the form of photographs, models, graphs, or other appropriate visual displays.
Any exhibit that exceeds a size suitable for inclusion in the record shall be reduced or folded to a size not to exceed legal size of eight and one-half by fourteen inches (81/2 in. x 14 in.).
No material that exceeds legal size shall be submitted for the record.
If models are used, photographs of the models not exceeding legal size shall be supplied at the public hearing.
The Zoning Act of 1938, the Zoning Regulations (including appendices and the official Zoning Map), and this chapter shall be a part of the record of every proceeding before the Commission, and it shall not be necessary for any party or person formally to move their introduction into evidence.
The applicant, a public agency representative, a party, or a person may appear as a witness and offer evidence at a hearing.
In a contested case under § 3022, witnesses may be examined or cross-examined by the Commission, the applicant, or any party so determined by the Commission under this chapter.
In a rulemaking case under § 3021, only the Commission may examine witnesses.
In any case, any authorized representative of any public agency may pose a question to a witness through the presiding officer.
D.C. Mun. Regs. tit. 11, r. 11-3006