Special characters
Aus Wiki
Set Coding
gmtset CHAR_ENCODING ISOLatin1+
or
gmtset CHAR_ENCODING Standard+
Codes
http://www-k12.atmos.washington.edu/~ovens/gmt/doc/html/GMT_Docs/node153.html
Examples:
á : \341 í : \355 õ : \365 Ó : \323
