A party shall perform in a manner that conforms to the contract. If an uncured material breach of contract by one party precedes the aggrieved party’s performance, the aggrieved party need not perform except with respect to contractual use terms, but the contractual use terms do not apply to information or copies properly received or obtained from another source. In addition, the following rules apply: The aggrieved party may refuse a performance that is a material breach as to that performance or a performance that may be refused under § 22–704(b) of this title. The aggrieved party may cancel the contract only if the breach is a material breach of the whole contract or the agreement so provides. Except as otherwise provided in subsection (b) of this section, tender of performance by a party entitles the party to acceptance of that performance. In addition, the following rules apply: A tender of performance occurs when the party, with manifest present ability and willingness to perform, offers to complete the performance. If a performance by the other party is due at the time of the tendered performance, tender of the other party’s performance is a condition to the tendering party’s obligation to complete the tendered performance. A party shall pay or render the consideration required by the agreement for a performance it accepts. A party that accepts a performance has the burden of establishing a breach of contract with respect to the accepted performance. Except as otherwise provided in §§ 22–603 and 22–604 of this subtitle, in the case of a performance with respect to a copy, this section is subject to §§ 22–606 through 22–610 of this subtitle and §§ 22–704 through 22–707 of this title.