 In reality, internationally available word processors such as Microsoft Word have difficulties combining spell checkers and grammar checkers due to licensing issues; various proofing instrument mechanisms for a certain language would have been licensed under different providers at different times.Electronic corpora in the target language provide non-native language users with authentic examples of language use rather than fixed examples, which may not be reflected in daily interactions.The contextualised grammatical knowledge acquired by non-native language users through exposure to authentic texts in corpora allows them to grasp the manner of sentence formation in the target language, enabling effective writing.