# Purpose The purpose of a cell reference expression is to easily establish cross-references within a model. It does not matter whether the reference is established between two cells in the same block, between multiple blocks, or even beyond them. Advantages of cell reference expressions over Excel formulas that dynamically determine which other cells to use: - High processing speed when dealing with large numbers of cell references in Excel. - Increased data integrity as the formulas become simpler. - Faster and easier development of advanced models. - Cell reference expressions can be sourced from the database or defined within the model, thereby limiting the amount of network bandwidth required for extremely large models.