Dot

Property	Default	Meaning
`center`	`[0.5, 0.5]`	Center in the Dot's local rectangle
`radius`	`0.5`	Radius relative to the shorter side, or a px/em length

A filled Circle with a preferred 6px diameter and no stroke. Use width/height for other sizes, and pos with anchor in Group or Graph for positioning. Points creates marker sets.

// The Dot geometry convenience. <Box width="fill" aspect={1.6} padding={em(2)}> <Dot width={px(30)} height={px(30)} fill={blue} stroke={blue} stroke-width={px(3)} /> </Box>