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in the manual.

buffer is saved.

(toplevel): Some old-style function forward declarations
changed to prototypes, some new protypes added, some functions
made static.

(use_dialog_box): External declaration.

(kbd_buffer_events_waiting): Slightly rewritten.
(clear_event): New function.
(kbd_buffer_get_event): Use it, and clear the input_events of
HELP_EVENTs.
(init_keyboard): Remove duplicate creation of kbd_buffer_gcpro and
don't fill the newly created array with nils.
(toplevel): Convert some old-style function forward declarations
to prototypes.

(server-existing-buffer): New buffer-local variable.
(server-visit-files): When using an existing buffer, set
server-existing-buffer to t.
(server-buffer-done): If server-kill-new-buffers is t, kill the
buffer, unless it was already present before visiting it with
Emacs server.

even if the display doesn't support colors: some displays will
support bold/underline faces.

add explanatory text to *Messages*.

locale coding system.

single_keymap_panes.
(w32_menu_show): Set wv->title when dealing with titles.
(w32_menu_display_help): Call show_help_echo with OBJECT and POS.

(syms_of_w32term): staticpro it.
(note_mode_line_highlight): Set it.
(XTextExtents16): Removed as there is no equivalent on W32.
(x_compute_glyph_string_overhangs): Incomplete body removed, as
the X way of doing this will not work for W32.
(w32_intersect_rectangles): Removed. Use IntersectRect API call.
(x_draw_image_foreground):  Avoid drawing outside of the clip area
when image doesn't have a mask.
(note_mouse_highlight): Process overlays in the right order of
priority. Set help_echo_window.
(x_draw_bar_cursor): If cursor is on an image, draw a box cursor
because that's more visible for large images.

Don't test x-popup-menu.
(function) <complete-function>: Complete only fbound symbols.
<validate, value>: New.
(variable) <complete-function>: Complete only bound symbols.
(coding-system): Add :base-only, :complete-function, :validate,
:value, :prompt-match.
(widget-coding-system-prompt-value): Use read-coding-system and
act on :base-only.
(editable-field): Add :help-echo.
(widget-push-button-gui, widget-push-button-cache)
(widget-gui-action, widget-editable-list-gui): COmment out, along
with uses.
(widget-at): Make arg optional.
(widget-echo-help): Adjust for current help-echo calling sequence.
(widget-specify-field, widget-specify-button)
(widget-specify-insert, widget-get-sibling, widget-image-find)
(widget-convert, widget-insert, widget-leave-text)
(widget-beginning-of-line, widget-end-of-line, widget-kill-line)
(widget-setup, widget-field-find, widget-before-change)
(widget-after-change, widget-default-complete)
(widget-default-create, widget-default-delete)
(widget-push-button-value-create, editable-field)
(widget-field-prompt-value, widget-field-validate)
(widget-choice-value-create, widget-choice-action)
(widget-choice-validate, widget-checklist-add-item)
(widget-radio-add-item, widget-radio-chosen)
(widget-radio-value-inline, widget-editable-list-value-create)
(widget-editable-list-entry-create)
(widget-documentation-link-add)
(widget-documentation-string-value-create)
(widget-regexp-validate, widget-file-complete)
(widget-sexp-validate, widget-plist-convert-widget)
(widget-plist-convert-widget, widget-alist-convert-widget)
(widget-alist-convert-widget, widget-color-complete): Simplify,
particularly to avoid bindings which aren't optimized out.

(down-list, backward-up-list, up-list, kill-sexp)
(backward-kill-sexp, mark-sexp)): Make arg optional.
(lisp-complete-symbol): Add optional arg PREDICATE.