Leslie Vail has uncovered some new Dex.ini switches for Dynamics GP. She details them at NEW! Keys.ini file Control your Macro’s Date and Time
Dynamics Confessor Blogspot: NEW! Keys.ini file Control your Macro’s Date and Time
Development & IntegrationMicrosoft & the GP Ecosystem
Archived post from 2011. Dynamics GP and the links it points to have changed since; check current documentation before relying on version-specific steps.