(This message did not get through directly because the "h" word appeared within the first 5 lines.--NS) For online help we are developing 2 distinct files, both of which will be available from within the product. One of these is a context sensitive procedural help about how to use the program. The other, and the one to which I alluded, is an on-line command reference manual. It is designed to be comprehensive, and started out based on the material from our existing command reference. We recognize that much information is not contained in our command reference. There are new commands, and in actual use, many details about how things work are known to sophisticated users but not necessarily collected in the manual. The command reference is intended to be as comprehensive and technical as we can make it. Essentially the command set is the Xy API, and the more thoroughly it is documented the better. ALthough our new product adds many capabilities and commands to the file structure, previous Xy files are still supported. In that respect, as it relates to the existing commands, input from current users is quite valuable. I hope this answers your questions. We should be making this file available shortly. We need to determine how user input will be received and incorporated. K. N. Sivin History and Sociology of Science University of Pennsylvania Philadelphia, PA 19104-3325, U.S.A. nsivin@xxxxxxxx