] is a two-dimensional graphics directive which specifies that lines which follow are to be drawn dashed, with successive segments of lengths , , ... (repeated cyclically). The is given as a fraction of the total width of the graph.
Dashing can be used in both two- and three-dimensional graphics.
}] specifies that lines should be solid.
See the Mathematica book: Section 2.9.3.
See also: AbsoluteDashing, Thickness, GrayLevel, Hue, RGBColor, PlotStyle.
This draws a circle with dashes three times as long as the spaces between them.
Evaluate the cell to see the graphic.