Braille is a system of dots used in combination to form letters and words. It is essential for people with low-vision or no vision to maintain independence. It can be used at its simplest form to label household items, medications, files, clothing, etc. Or, it can be used at its most complex level for detailed reading for a job and reading lengthy books or technical items. It is often used by students to learn a foreign language, to do proofreading or editing and to access textbooks. One very strong advantage of the use of Braille is to maintain spelling accuracy which is difficult to achieve through merely listening to text on a regular basis.