and so forth (on) used to represent other things of the type you have already mentioned without actually naming them Others are interested in art,music, books,and so forth (on). The old man started telling me about his experiences,his dreams,and so forth.and so forth (on) • used to represent other things of the type you have already mentioned without actually naming them Others are interested in art, music, books, and so forth (on). The old man started telling me about his experiences, his dreams, and so forth