This file, included with A-Shell and normally found in DSK0:[907,16], provides a list of most symbols defined for use with routines embedded in A-Shell. Most applications using A-Shell functions, particularly GUI functions, will want to ++include ashell.def in every program. Note that doing so does not increase the size of the RUN file except for symbols that are actually used. A-Shell routines that have traditionally been distinct from A-Shell have their own symbol definition files (i.e., mmosym.def for INMEMO), and most SBX routines also have their own symbol definition (.def) files. The latest copy of the file can always be found here: https://bitbucket.org/microsabio/soslib/src/masterefault/907016/ashell.def