Credentials may undergo a checking.Logical formLearned from4 sentences. Checking may be allowed.Logical formLearned from4 sentences. Specifications may undergo a checking.Logical formLearned from4 sentences. (Type checking) can be undecidable.Logical formLearned from4 sentences. Indexicals may be used for checking.Logical formLearned from4 sentences. (Security checking) may be used.Logical formLearned from4 sentences. Checking can be on filesystems.Logical formLearned from4 sentences. A (checking account) can be fat.Logical formLearned from4 sentences. A (checking account) may work.Logical formLearned from4 sentences. Some checking may be completed.Logical formLearned from4 sentences. A checking can be meaningful.Logical formLearned from4 sentences. A checking can be powerful.Logical formLearned from4 sentences. An amount can be in a (checking account).Logical formLearned from4 sentences. Integrity may undergo a checking.Logical formLearned from4 sentences. An (error checking) can be automated.Logical formLearned from4 sentences.