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-Adobe's PostScript Language Reference Manual defines a turing complete language for producing graphics output on an abstract ``output device''\cite{plrm}. A PostScript document is treated as a procedural program; an interpreter executes instructions in the order they are written by the programmer. In particular, the document specifies the locations of enclosed curves using B\'{e}zier splines (Section \ref{}), whilst text is treated as vector fonts described in Section \ref{}.
+Adobe's PostScript Language Reference Manual defines a turing complete language for producing graphics output on an abstract ``output device''\cite{plrm}. A PostScript document is treated as a procedural program; an interpreter executes instructions in the order they are written by the programmer. In particular, the document specifies the locations of enclosed curves using B\'{e}zier splines (Section \ref{Bezier Splines}), whilst text is treated as vector fonts described in Section \ref{Fonts}.
 \begin{comment}
 Each symbol is pushed onto a stack as it is read. Special symbols called ``operators'' can act upon this stack and/or the output device. An internal ``graphics state'' stack can be constructed to store styling information (such as colour, line thickness, the current cursor position). It is possible for the language to define new operators.\end{comment} 
 PostScript was and is still widely used in printing of documents onto paper; many printers execute postscript directly, and newer formats including PDF must still be converted into PostScript by printer drivers\cite{pdfref17, cheng2002portable}.