9. A system for inserting delimiters into a formula, comprising: a processor configured to: successively receive a plurality of selections of cells while in a formula editing mode in a host cell into which a formula is being entered; automatically determine a current context of the formula with respect to which the selections are received; and automatically insert a first delimiter type between references to the cells inserted into the formula in response to receiving the plurality of selections when the current context comprises a first context and automatically insert a second delimiter type between references inserted into the formula in response to receiving the plurality of selections when the current context comprises a second context, wherein each first and second delimiter type spatially separates the references to the cells from each other within the formula by being inserted between the references to the cells; and a memory coupled to the processor and configured to provide instructions to the processor.
9. A system for inserting delimiters into a formula, comprising: a processor configured to: successively receive a plurality of selections of cells while in a formula editing mode in a host cell into which a formula is being entered; automatically determine a current context of the formula with respect to which the selections are received; and automatically insert a first delimiter type between references to the cells inserted into the formula in response to receiving the plurality of selections when the current context comprises a first context and automatically insert a second delimiter type between references inserted into the formula in response to receiving the plurality of selections when the current context comprises a second context, wherein each first and second delimiter type spatially separates the references to the cells from each other within the formula by being inserted between the references to the cells; and a memory coupled to the processor and configured to provide instructions to the processor. 12. A system as recited in claim 9 , wherein the first context comprises not being in an argument list of a function and wherein the first delimiter type comprises a plus sign.