spelling hi richard great to see you helping to correct spelling mistakes however you should be aware of wikipedia manual of style national varieties of english an article on a topic that has strong ties to a particular english speaking nation should use the english of that nation this includes differences in spelling between us english and other varieties of english i e us center brit centre us organization brit organisation etc a comprehensive list of differences can be found at american and british english spelling differences note that australian and new zealand articles largely follow british english spelling too cheers