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General Purpose PostScript Generating Utility

7.6.1 A Bit of Syntax

• the separators are white space, form feed, new line, and tab.

• `#' introduces a comment, ended at the end of the line.

• special characters are the separators, plus `#', `"', `,', `(', `)', `+' and `/'. Any other character is a regular character.

• the list of the structuring keywords is

  alphabet, alphabets, are, case, documentation, end, exceptions, first, in, insensitive, is, keywords, operators, optional, second, sensitive, sequences, style

• the list of the keywords designating faces is

  Comment, Comment_strong, Encoding, Error, Index1, Index2, Index3, Index4, Invisible, Keyword, Keyword_strong, Label, Label_strong, Plain, String, Symbol, Tag1, Tag2, Tag3, Tag4

• the list of keywords designating special sequences is

  C-char, C-string

• the list of keywords representing special characters is

  ---, \Alpha, \Beta, \Chi, \Delta, \Downarrow, \Epsilon, \Eta, \Gamma, \Im, \Iota, \Kappa, \Lambda, \Leftarrow, \Leftrightarrow, \Mu, \Nu, \Omega, \Omicron, \Phi, \Pi, \Psi, \Re, \Rho, \Rightarrow, \Sigma, \Tau, \Theta, \Uparrow, \Upsilon, \Xi, \Zeta, \aleph, \alpha, \angle, \approx, \beta, \bullet, \cap, \carriagereturn, \cdot, \chi, \circ, \clubsuit, \cong, \copyright, \cup, \delta, \diamondsuit, \div, \downarrow, \emptyset, \epsilon, \equiv, \eta, \exists, \florin, \forall, \gamma, \geq, \heartsuit, \in, \infty, \int, \iota, \kappa, \lambda, \langle, \lceil, \ldots, \leftarrow, \leftrightarrow, \leq, \lfloor, \mu, \nabla, \neq, \not, \not\in, \not\subset, \nu, \omega, \omicron, \oplus, \otimes, \partial, \perp, \phi, \pi, \pm, \prime, \prod, \propto, \psi, \radicalex, \rangle, \rceil, \register, \rfloor, \rho, \rightarrow, \sigma, \sim, \spadesuit, \subset, \subseteq, \suchthat, \sum, \supset, \supseteq, \surd, \tau, \theta, \therefore, \times, \trademark, \uparrow, \upsilon, \varUpsilon, \varcopyright, \vardiamondsuit, \varphi, \varpi, \varregister, \varsigma, \vartheta, \vartrademark, \vee, \wedge, \wp, \xi, \zeta

  It is a good idea to print the style sheet `symbols.ssh' to see them:

  a2ps symbols.ssh

• a string starts and finishes with `"', and may contain anything. Regular C escaping mechanism is used.

• a regular expression starts and finishes with `/', and may contain anything. Regular C escaping mechanism is used. Regexps can be split in several parts, a` la C strings (i.e., `/part 1/ /part 2/').

• any sequence of regular characters which is not a keyword, is a string (consider this as a shortcut, avoiding extraneous `"').