We use an open source learner management system called Moodle. The founder of Moodle and most of the programmers are from Australia. British and Australian spelling of enrollment is different than the U.S. customary spelling. Where the Australian spelling pops up comes from software generated text and we are not able to change the spelling unless we meddle with the php program. That is a skill set we are not comfortable enough with to tackle at this point. We are stuck with the mix of U.S. spelling and Australian spelling for the time being.