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### 2.2 Options

Many `PSTricks` and `TikZ/PGF` options work just fine in `sketch`. If generating `PSTricks`, the code

      polygon[fillcolor=lightgray,linewidth=3pt](0,0,1)(1,0,0)(0,1,0)
      line[linestyle=dotted](-1,-1,-1)(2,2,2)

produces

To produce `TikZ/PGF`, the corresponding code is

      polygon[fill=lightgray,line width=3pt](0,0,1)(1,0,0)(0,1,0)
      line[style=dotted](-1,-1,-1)(2,2,2)
      global { language tikz }

The final `global` instructs `sketch` to produce `TikZ/PGF` code as output rather than the default, `PSTricks`. Note that `polygon` fill color and `line` style options both conform to `TikZ` syntax rules. The remaining examples of this manual are in PSTricks style.