Plenty of other examples could be given but the idea is to look closely at the file extension letters and make sure they say GBR, else you're probably dealing with something entirely different than what's covered in this article.
Enwere ike inye ọtụtụ ihe atụ ndị ọzọ mana echiche bụ ile anya na akwụkwọ mpịakọta faịlụ ma jide n'aka na ha na-ekwu .GBGB, ma eleghị anya, ị nwere ike ịme ihe dị iche iche karịa ihe edere n'isiokwu a.