This paper reports an experiment in on-line retrieval using man-machine dialogue on a remote console. Message editing procedures and the use of two command languages are described. The system employs a PDP-8 computer for generating, proofreading, and editing messages, and an IBM 7040 computer for information retrieval processing. The symbolic retrieval language permits three commands in the search mode: retrieve, combine, and display. The second language, Easy English, requires only that requests be formulated in a specified syntactic form. Users have the option to translate Easy English requests to symbolic language during a search. (Author/JW)