Proposal:Marine-tagging/topmark

topmark

topmark=*

could be just "yes" or it describes the shape of topmark: e.g. , , ,

OSM-value	S-57 name	S-57 description
cone_pointup	cone, point up	is where the vertex points up
cone_pointdown	cone, point down	is where the vertex points down
sphere	sphere	a body the surface of which is at all points equidistant from the centre. (The New Shorter Oxford English Dictionary. 1993. vol 2) spheres are commonly used as International Association of Lighthouse Authorities - IALA topmarks (safe water).
2spheres	two spheres	two black spheres are commonly used as an International Association of Lighthouse Authorities - IALA topmark (isolated danger).
cylinder	cylinder	a solid geometrical figure generated by straight lines fixed in direction and describing with one of point a closed curve, especially a circle (in which case the figure is circular cylinder, it's ends being parallel circles). (The New Shorter Oxford English Dictionary. 1993. vol 2). cylinders are commonly used as International Association of Lighthouse Authorities - IALA topmarks (lateral).
board	board	usually of rectangular shape, made from timber or metal and used to provide a contrast with the natural background of a daymark. The actual daymark is often painted on to this board.
xshape	x-shape	having a shape or a cross-section like the capital letter X. (The New Shorter Oxford English Dictionary. 1993. vol 2) an x-shape as an International Association of Lighthouse Authorities - IALA topmark should be 3 dimensional in shape. It is made of at least three crossed bars.
upright_cross	upright cross	a cross with one vertical member and one horizontal member, i.e. similar in shape to the character '+'.
cube	cube	a solid contained by six equal squares; a regular hexahedron (The New Shorter Oxford English Dictionary. 1993. vol 2) cube, point up: a cube standing on one of its vertexes.
cube_pointup	cube, point up	a cube standing standing on one of its vertexes.
2cones_point2point	2 cones, point to point	2 cones, one above the other, with their vertices together in the centre.
2cones_base2base	2 cones, base to base	2 cones, one above the other, with their bases together in the centre and their vertices pointing up and down.
rhombus	rhombus	a plane figure having four equal sides and equal opposite angles (two acute and two obtuse); an oblique equilateral parallelogram. (The New Shorter Oxford English Dictionary. 1993. vol 2)
besom	besom	a bundle of rods or twigs. (The New Shorter Oxford English Dictionary. 1993. vol 1) perch: a staff placed on top of a buoy, rock or shoal as a mark for navigation. (IHO Dictionary, S-32, 5th Edition, 3734)
perch	perch	a staff placed on top of a buoy , rock or shoal as a mark for navigation. (IHO Dictionary, S-32, 5th Edition, 3734)
flag	flag	a flag mounted on a short pole.
sphere_over_rhombus	shpere over rhombus	A sphere located above a rhombus.
square	square	a plane figure with four right angles and four equal straight sides (The New Shorter Oxford English Dictionary. 1993. vol 2)
rectangle	rectangle	a plane figure with four right angles and four straight sides, opposite sides being parallel and equal in length (The New Shorter Oxford English Dictionary. 1993. vol 2) horizontal rectangle: where the two longer opposite sides are standing horizontally. vertical rectangle: where the two longer opposite sides are standing vertically.
horizontal_rectangle	horizontal rectangle	where the two longer opposite sides are standing horizontally.
vertical_rectangle	vertical rectangle	where the two longer opposite sides are standing vertically.
trapezium	trapezium	a quadrilateral having one pair of opposite sides parallel. (The New Shorter Oxford English Dictionary. 1993. vol 2) trapezium, up: which stands on its longer parallel side. trapezium, down: which stands on its shorter parallel side.
trapezium_up	trapezium up	which stands on its longer parallel side.
trapezium_down	trapezium down	which stands on its shorter parallel side.
triangle	triangle	a figure having three angles and three sides. (New Shorter Oxford English Dictionary. 1993. vol 2)
circle	circle	a perfectly round plane figure whose circumference is everywhere equidistant from its centre. (The New Shorter Oxford English Dictionary. 1993. vol 1)
2upright_crosses	two upright crosses	two upright crosses, generally vertically disposed one above the other.
tshape	T-shape	having a shape like the capital letter T.
triangle_pointup_over_circle	triangle pointing up over a circle	a triangle, vertex uppermost, located above a circle.
upright_cross_over_circle	upright cross over a circle	an upright cross located above a circle.
rhombus_over_circle	rhombus over a circle	an upright cross located above a circle.
	circle over a triangle pointing up a circle located over a triangle, vertex uppermost

topmark:colour=*

colour of topmark e.g.: red | green | yellow | black