Abstract: In a method, apparatus, and system of data entry, input is monitored from a plurality of input keys, including a plurality of multi-function keys. A prefix associated with at least one entry in a dictionary is generated in response to input received from at least one of the plurality of input keys. A set of predicted following characters is generated each having a representation in the dictionary immediately subsequent to the position of the prefix in one or more dictionary entries. Each predicted following character is associated with a character in a dictionary entry and with a preference value associated with that character. A dynamically ordered sequence of available following characters is generated in respect of an actuated one of the plurality of multi-function keys, comprising one or more of the predicted following characters.