Some applications may require functionality.Logical formLearned from3 sentences. A device may provide functionality.Logical formLearned from3 sentences. Functionalities can be chemical.Logical formLearned from3 sentences. A functionality may pertain-to a cell.Logical formLearned from3 sentences. Functionality may pertain-to a digital library.Logical formLearned from3 sentences. (User reaction) can be to functionality.Logical formLearned from3 sentences. A functionality may be required of a level.Logical formLearned from3 sentences. Functionality can be in a standard.Logical formLearned from3 sentences. A functionality may pertain-to a browser.Logical formLearned from3 sentences. A functionality may pertain-to a digital library.Logical formLearned from3 sentences. A (library functionality) can be basic.Logical formLearned from3 sentences. A functionality may undergo implications.Logical formLearned from3 sentences. A functionality may pertain-to tools.Logical formLearned from3 sentences. A functionality can be to documents.Logical formLearned from3 sentences. A functionality can be open-ended.Logical formLearned from3 sentences.