On FROFF: A Text Processing System for English Texts and Figures Norihiro Abe author Nobutaka Uemura author Masahiro Higashide author Saburo Tsuji author 1980 text COLING 1980 Volume 1: The 8th International Conference on Computational Linguistics conference publication abe-etal-1980-froff https://aclanthology.org/C80-1039/ 1980