    class
    	EV_FIGURE_WORLD

    General
    	cluster: interface
    	description:
    		"Figure groups that are the root of a world of figures.
    		May be interpreted by any kind of projection.
    		Examples: may be output to a printer, saved to an XML file,
    		drawn on a drawing area, etc."
    	keywords: "figure, world, group, universe, system"
    	create: make_filled, default_create

    Ancestors
    	EV_FIGURE_GROUP

    Action sequences
    	conforming_pick_actions: EV_NOTIFY_ACTION_SEQUENCE
    	drop_actions: EV_PND_ACTION_SEQUENCE
    	pick_actions: EV_PND_START_ACTION_SEQUENCE
    	pointer_button_press_actions: EV_POINTER_BUTTON_ACTION_SEQUENCE
    	pointer_button_release_actions: EV_POINTER_BUTTON_ACTION_SEQUENCE
    	pointer_double_press_actions: EV_POINTER_BUTTON_ACTION_SEQUENCE
    	pointer_enter_actions: EV_NOTIFY_ACTION_SEQUENCE
    	pointer_leave_actions: EV_NOTIFY_ACTION_SEQUENCE
    	pointer_motion_actions: EV_POINTER_MOTION_ACTION_SEQUENCE

    Queries
    	accept_cursor: EV_POINTER_STYLE
    	after: BOOLEAN
    	background_color: EV_COLOR
    	before: BOOLEAN
    	bounding_box: EV_RECTANGLE
    	capacity: INTEGER_32
    	capture_figure: EV_FIGURE
    	changeable_comparison_criterion: BOOLEAN
    	count: INTEGER_32
    	cursor: ARRAYED_LIST_CURSOR
    	Default_grid_x: INTEGER_32
    	Default_grid_y: INTEGER_32
    	deny_cursor: EV_POINTER_STYLE
    	duplicate (n: INTEGER_32): [like Current] EV_FIGURE_WORLD
    	exhausted: BOOLEAN
    	Extendible: BOOLEAN
    	first: [like item] EV_FIGURE
    	for_all (test: FUNCTION [ANY, TUPLE [EV_FIGURE], BOOLEAN]): BOOLEAN
    	full: BOOLEAN
    	grid_enabled: BOOLEAN
    	grid_visible: BOOLEAN
    	grid_x: INTEGER_32
    	grid_y: INTEGER_32
    	group: EV_FIGURE_GROUP
    	has (v: [like item] EV_FIGURE): BOOLEAN
    	has_capture: BOOLEAN
    	i_th alias "[]" (i: INTEGER_32): [like item] EV_FIGURE
    	id_object (an_id: INTEGER_32): IDENTIFIED
    	index: INTEGER_32
    	index_of (v: [like item] EV_FIGURE; i: INTEGER_32): INTEGER_32
    	index_set: INTEGER_INTERVAL
    	infix "@" (i: INTEGER_32): [like item] EV_FIGURE
    	intersects (r: EV_RECTANGLE): BOOLEAN
    	invalid_rectangle: EV_RECTANGLE
    	is_empty: BOOLEAN
    	is_inserted (v: EV_FIGURE): BOOLEAN
    	is_redraw_needed: BOOLEAN
    	is_sensitive: BOOLEAN
    	is_show_requested: BOOLEAN
    	isfirst: BOOLEAN
    	islast: BOOLEAN
    	item: EV_FIGURE
    	last: [like first] EV_FIGURE
    	linear_representation: LINEAR [EV_FIGURE]
    	object_comparison: BOOLEAN
    	object_id: INTEGER_32
    	occurrences (v: [like item] EV_FIGURE): INTEGER_32
    	off: BOOLEAN
    	orientation: REAL_64
    	pebble: ANY
    	pebble_function: FUNCTION [ANY, TUPLE, ANY]
    	point: EV_RELATIVE_POINT
    	point_array: ARRAY [EV_COORDINATE]
    	point_count: INTEGER_32
    	pointer_style: EV_POINTER_STYLE
    	points_visible: BOOLEAN
    	position_on_figure (x, y: INTEGER_32): BOOLEAN
    	prunable: BOOLEAN
    	readable: BOOLEAN
    	sequential_occurrences (v: [like item] EV_FIGURE): INTEGER_32
    	target_name: STRING_GENERAL
    	there_exists (test: FUNCTION [ANY, TUPLE [EV_FIGURE], BOOLEAN]): BOOLEAN
    	update_rectangle: EV_RECTANGLE
    	valid_cursor (p: CURSOR): BOOLEAN
    	valid_cursor_index (i: INTEGER_32): BOOLEAN
    	valid_index (i: INTEGER_32): BOOLEAN
    	world: EV_FIGURE_WORLD
    	writable: BOOLEAN
    	x_to_grid (a_x: INTEGER_32): INTEGER_32
    	y_to_grid (a_y: INTEGER_32): INTEGER_32

    Commands
    	append (s: SEQUENCE [EV_FIGURE])
    	back
    	calculate_absolute_position
    	compare_objects
    	compare_references
    	disable_capture
    	disable_grid
    	disable_sensitive
    	do_all (action: PROCEDURE [ANY, TUPLE [EV_FIGURE]])
    	do_if (action: PROCEDURE [ANY, TUPLE [EV_FIGURE]]; test: FUNCTION [ANY, TUPLE [EV_FIGURE], BOOLEAN])
    	enable_capture
    	enable_grid
    	enable_sensitive
    	extend (v: [like item] EV_FIGURE)
    	fill (other: CONTAINER [EV_FIGURE])
    	finish
    	force (v: [like item] EV_FIGURE)
    	force_i_th (fig: [like item] EV_FIGURE; i: INTEGER_32)
    	forth
    	full_redraw
    	go_i_th (i: INTEGER_32)
    	go_to (p: CURSOR)
    	hide
    	hide_grid
    	hide_points
    	insert (fig: [like item] EV_FIGURE; i: INTEGER_32)
    	invalidate
    	list_make (n: INTEGER_32)
    	make_filled (n: INTEGER_32)
    	make_from_array (a: ARRAY [EV_FIGURE])
    	merge_left (other: [like Current] EV_FIGURE_WORLD)
    	merge_right (other: [like Current] EV_FIGURE_WORLD)
    	move (i: INTEGER_32)
    	prune (v: [like item] EV_FIGURE)
    	prune_all (fig: [like item] EV_FIGURE)
    	put (v: [like item] EV_FIGURE)
    	put_front (v: [like item] EV_FIGURE)
    	put_left (v: [like item] EV_FIGURE)
    	put_right (v: [like item] EV_FIGURE)
    	remove
    	remove_capture_figure
    	remove_left
    	remove_pebble
    	remove_right
    	replace (fig: [like item] EV_FIGURE)
    	resize (new_capacity: INTEGER_32)
    	search (v: [like item] EV_FIGURE)
    	set_accept_cursor (a_cursor: EV_POINTER_STYLE)
    	set_background_color (a_color: EV_COLOR)
    	set_capture_figure (a_figure: EV_FIGURE)
    	set_deny_cursor (a_cursor: EV_POINTER_STYLE)
    	set_grid_x (new_grid_x: INTEGER_32)
    	set_grid_y (new_grid_y: INTEGER_32)
    	set_origin (an_origin: EV_RELATIVE_POINT)
    	set_pebble (a_pebble: [like pebble] ANY)
    	set_pebble_function (a_function: FUNCTION [ANY, TUPLE, ANY])
    	set_point (a_point: EV_RELATIVE_POINT)
    	set_pointer_style (a_cursor: [like pointer_style] EV_POINTER_STYLE)
    	set_target_name (a_name: STRING_GENERAL)
    	show
    	show_grid
    	show_points
    	snap_to_grid
    	start
    	swap (i: INTEGER_32)
    	validate
    	wipe_out

    Constraints
    	background color exists