Sentence:  In addition , the right to vote the General Motors stock held by du Pont was to be vested in du Pont 's stockholders , other than Christiana and Delaware and the stockholders of Delaware ; du Pont , Christiana , and Delaware were to be enjoined from acquiring stock in or exercising control over General Motors ; du Pont , Christiana , and Delaware were to be prohibited to have any director or officer in common with General Motors , and vice versa ; and General Motors and du Pont were to be ordered to terminate any agreement that provided for the <WSD>purchase</WSD> by General Motors of any specified percentage of its requirements of any du Pont manufactured product , or for the grant of exclusive patent rights , or for a grant by General Motors to du Pont of a preferential right to make or sell any chemical discovery of General Motors , or for the maintenance of any joint commercial enterprise by the two companies . 
Meaning of the word marked with <WSD> tags:  the acquisition of something for payment