Issue I487 [80,lua,minor,resolved] ion_instance no longer accessible from top-level of workbench program. As of 8.0.5-TEST10, ion_instance is not accessible from the top-level of a workbench program (outside of segments). In prior versions, ion_instance was accessible, but this variable has no meaning here. Note: in some cases, depending on run-time conditions, some other variables may have been accessible. Note: this defect would unlikely be seen in practice. Affects 8.0.0-8.0.5-TEST9. Resolved in 8.0.5-TEST10.