Sentence:  From its inception in 1920 with the passage of Public Law 236 , 66 th Congress , the purpose of the <WSD>vocational</WSD> rehabilitation program has been to assist the States , by means of grants-in-aid , to return disabled men and women to productive , gainful employment . 
Meaning of the word marked with <WSD> tags:  of or relating to a vocation or occupation; especially providing or undergoing training in special skills