Abstract: A system for saving time when keyboarding data by building a primary dictionary and generating a functional dictionary from the primary dictionary by dividing each article of the primary dictionary into an initial context part and a final completion part. Offering, selecting and automatically inserting "completions" data occurs when the last input data coincides with one of the contexts of the functional dictionary. The initial articles of the dictionary are character chains independent from words delimiters. A second module, intended to be incorporated into a word processor, display and insets the useful completions with the best possible comfort for the user.