The options mechanism allows to customise Grace to the needs of a particular program, a user, or a computing environment. Each option represents a value which is interpreted by Grace during its execution. It is quite similar to X Windows properties or Tk option command, however it uses Prolog syntax and it can be seamlessly integrated into ECLiPSe programs.
Various Grace features and parameters can be queried and modified using the grace_option/3 predicate. Its arguments are:
We now explain the meaning and usage of the option arguments.