




The variables *standard-input*, *standard-output*, *trace-output*, *error-output*, *query-io* and *debug-io* are bound globally to synonyms to the various default streams as follows:
*standard-input* - synonym to *background-input**standard-output*, *trace-output* and *error-output* - synonym to *background-output**query-io* and *debug-io* - synonym to *background-query-io*See *background-input* for details.
LispWorks User Guide and Reference Manual - 20 Sep 2017