Aspects relate to enabling and disabling execution of a run-time instrumentation facility. Some embodiments of the present invention may further comprise a system for nasal irrigation that includes the assembly for nasal irrigation or handheld irrigator, as well as a solution assembly structured for dispensing irrigating fluid to the handheld irrigator, a docking station for removably housing the handheld irrigator, a solution assembly and a refill control, including a check valve. The rejector body has an upstream portion and a downstream portion. Both of image data are synthesized and outputted. More particularly, a combination of bisacodyl, metoclopramide, sodium, andor a phosphorus containing composition administered in sequential doses for preparing a colon prior to colonoscopy.