— Scheme Procedure: eval-options [setting]

Display the current settings of the evaluator options. If setting is omitted, only a short form of the current evaluator options is printed. Otherwise, setting should be one of the following symbols:

help

Display the complete option settings.

full

Like help, but also print programmer options.

— Scheme Procedure: eval-enable option-name
— Scheme Procedure: eval-disable option-name
— Scheme Procedure: eval-set! option-name value

Modify the evaluator options. eval-enable should be used with boolean options and switches them on, eval-disable switches them off. eval-set! can be used to set an option to a specific value.

— Scheme Procedure: eval-options-interface [setting]
— C Function: scm_eval_options_interface (setting)

Option interface for the evaluation options. Instead of using this procedure directly, use the procedures eval-enable, eval-disable, eval-set! and eval-options.

— Scheme Procedure: traps [setting]

Display the current settings of the evaluator traps options. If setting is omitted, only a short form of the current evaluator traps options is printed. Otherwise, setting should be one of the following symbols:

help

Display the complete option settings.

full

Like help, but also print programmer options.

— Scheme Procedure: trap-enable option-name
— Scheme Procedure: trap-disable option-name
— Scheme Procedure: trap-set! option-name value

Modify the evaluator options. trap-enable should be used with boolean options and switches them on, trap-disable switches them off. trap-set! can be used to set an option to a specific value.

— Scheme Procedure: evaluator-traps-interface [setting]
— C Function: scm_evaluator_traps (setting)

Option interface for the evaluator trap options.