A decoration point is stored in the `go_decorator_point`

structure.
It has the `GOT_DECORATION_POINT`

type and `GOST_DECORATOR_POINT`

subtype. It is a point with style properties including the rotation, radius
and the number of vertices. The number of vertices can be:

**zero**for a circular shape**one**for no shape**two**for a segment**three up to one hundred**for a polygon with the given number of vertices**more**for a circular shape again.

The decoration point is resistant to transformations – it always keeps the same radius and rotation.