The characters and their octal codes in the reencoded standard fonts are shown in Figure F.1. The chart for the Symbol (GMT font number 12) character sets are presented in Figure F.2 below. Gray areas signify codes reserved for control characters. The octal code is obtained by appending the column value to the ?? value, e.g., is 266 in the Symbol font. In order to use all the extended characters you need to set WANT_EURO_FONT to true in your .gmtdefaults fileF.1.
The Pifont ZapfDingbats is available as GMT font number 34 and can be used for special symbols not listed above. The various symbols are illustrated in Figure F.3.