A smart fill feature is provided, which may be utilized to provide suggestions to a user and to prepopulate fill results in a spreadsheet. Characteristics associated with a set of data may be recognized and used to help determine fill results Suggestions may be determined from internal and or/external data sources, and may use contextual information in a data set to determine what a user may be trying to accomplish. External data sources may include one or more Internet data sources or internal corporate databases, providing a large amount of data from which to search for potential fill results. A split column command may be used to split a column into two or more columns. Data may be split between columns or combined by various methods, which may include, by example, by direct manipulation via tokens, or via a slider UI.