This is a summary of muLISP-86 features not yet incorporated into the Reference Manual: The file HELP.LSP provides a help facility for muLISP primitives. After it is read in, commands of the form (HELP name) or (? name) show 's arguments, primitive type, and page number in Chapter 5 of the Reference Manual. The file STRUCTUR.LSP contains a structure facility (DEFSTRUCT) and an array facility (MAKE-ARRAY, AREF, ARRAY-RANK, ARRAY-DIMENSION, ARRAY-DIMENSIONS, ARRAY-TOTAL-SIZE, and ARRAY-IN-BOUNDS-P). See the file and Chapters 17 and 19 of Common LISP by Steele for documentation. The function DOS, defined in COMMON.LSP, simplifies the calling of the MS-DOS command processor. For example: (DOS "DIR B:/W"). The function GENSYM, defined in COMMON.LSP, creates new symbols. (GENSYM) returns a new symbol. If is a nonnegative integer, (GENSYM n) sets the gensym counter to . (GENSYM symbol) sets the gensym prefix to . A "backquote" macro character, defined in COMMON.LSP, facilitates defining macros using DEFMACRO. See the file and pages 349-351 of Common LISP by Steele for documentation. The functions STRING-TRIM, STRING-RIGHT-TRIM, and STRING-LEFT-TRIM, defined in MULISP.COM, can now accept either a list or a symbol as its first argument (in accordance with Common LISP). The function STACK-LIST, defined in MULISP.COM, returns a list of the values currently on the muLISP variable stack. The muLISP editor command Ctrl-Q L repeats the last search and replace command until the end of the text is reached. If the muLISP editor control variable *CASE-IGNORE* is nonNIL, case is ignored when searching for a string. The muLISP editor variable *WINDOW-SHAPE* controls the initial dimensions of the edit window. F for full screen, V for vertical split, H for horizontal split. A native code compiler for muLISP is now available from Soft Warehouse, Inc. Write Soft Warehouse for details.