code to use the setup for the current Emacs session, or copy the code
into your init file, to make Emacs use it for subsequent sessions.
-FROM and TO define the range of characters for which to produce the
-setup code for `standard-display-table'. If they are omitted, they
-default to #x100 and #x10FFFF respectively, covering the entire
-non-ASCII range of Unicode characters.
+Interactively, the produced code arranges for any character in
+the range [#x100..#x10FFFF] that the terminal cannot display to
+be represented by the #xFFFD Unicode replacement character.
+
+When called from Lisp, FROM and TO define the range of characters for
+which to produce the setup code for `standard-display-table'. If they
+are omitted, they default to #x100 and #x10FFFF respectively, covering
+the entire non-ASCII range of Unicode characters.
REPL is the replacement character to use. If it's omitted, it defaults
to #xFFFD, the Unicode replacement character, usually displayed as a
black diamond with a question mark inside.