A user interface system provides an electronic form supporting simplified navigation using table driven values and decisions. A display processor provides a display image enabling a user to perform a hierarchically ordered selection of a first parameter and a second parameter from a set of parameters associated with the selected first parameter. A repository contains data, representing multiple data fields, for display in a form, and associates particular data fields with a particular form and a particular ordered selection of parameters. A form processor generates data, representing a particular form including particular data fields derived from the repository, and initiates generation of data representing a display image including the particular form, in response to user selection of the first and second parameters.