While it is important to remain civil to all users, please remember that new users may not be familiar with Wikiquette. So if you encounter a mistake by a new user please do not bite the newbie.
This page is written in British English, which has its own spelling conventions (colour, travelled, centre, defence, artefact, analyse) and some terms that are used in it may be different or absent from other varieties of English. According to the relevant style guide, this should not be changed without broad consensus.