Specifies point size in graphics
与 .wl 参考的差异： `PointSize` in `PlotStyle` and `ListPlot`'s `PlotLabel`
PointSize[d]
Table[Graphics[{PointSize[r], Point[{0, 0}]}], {r, {0.02, 0.05, 0.1, 0.3}}]
→ {-Graphics-, -Graphics-, -Graphics-, -Graphics-}Table[Graphics3D[{PointSize[r], Point[{0, 0, 0}]}], {r, {0.02, 0.05, 0.1, 0.3}}]
→ {-Graphics3D-, -Graphics3D-, -Graphics3D-, -Graphics3D-}Table[Graphics[{PointSize[r], Point[{0, 0}]}], {r, {Tiny, Small, Medium, Large}}]
→ {-Graphics-, -Graphics-, -Graphics-, -Graphics-}