This is a new debugger for 4.2BSD. It is intended to be able to handle different languages, but currently only understands C and Fortran. Interface files (.h) are automatically generated from implementation files (.c) so they (the .h files) should not be modified. Many problems have yet to be fixed. Mark Linton Computer Science Division Univ. of Calif. at Berkeley Berkeley, CA 94720 ARPANET: linton@berkeley UUCP: ucbvax!linton