@section Search and Replace
@cindex replacement
-@defun perform-replace from-string replacements start end query-flag regexp-flag delimited-flag &optional repeat-count map
+@defun perform-replace from-string replacements query-flag regexp-flag delimited-flag &optional repeat-count map start end
This function is the guts of @code{query-replace} and related
commands. It searches for occurrences of @var{from-string} in the
text between positions @var{start} and @var{end} and replaces some or
-all of them. If @var{start} is @code{nil}, point is used instead, and
-the buffer's end is used for @var{end}.
+all of them. If @var{start} is @code{nil} (or omitted), point is used
+instead, and the buffer's end is used for @var{end}.
If @var{query-flag} is @code{nil}, it replaces all
occurrences; otherwise, it asks the user what to do about each one.