Form Number. Title. PDF. DOC. WPD. GF-17. These forms and instructions are available in the General Clerk's Office, Room 108, in the Nassau County.Forms ; PETITION TO INTERVENE AND MODIFY CUSTODY, 19 ; PETITION TO MODIFY CUSTODY, 16 ; PRAECIPE AND WRIT FOR POSSESSION, 2 ; PRAECIPE AND WRIT FOR SUMMONS, 1. Tributors shall fill out only Columns 10, 12, and 13. In Column 8 producers and dis tributors shall show, where Form WPB 2947.