set printengineoverride= { no | app | fosi | xslfo}

This command allows you to specify the publishing engine for the current editing session, thus temporarily overriding settings made in a stylesheet’s properties. The default value is no. Using a no value after a previous override action during the same session will return the environment to its effective print engine.

See Logic for print/preview engine selection in Arbortext Styler help for further information.