Method and apparatus for control of a parameter value using a graphical user interface

A method and system for controlling parameter values. One such system includes a number of functions for controlling parameter values, i.e. "parameter control functions," to enable a user to quickly and easily control variable parameter values using a graphical user interface and to enable the user to obtain the desired precision of control of such variables. One such system provides four control functions: a data entry function, single step function, a scroll function, and a translation function. The user can select the particular control function used to control a parameter value in light of the particular amount or type of control that needs to be accomplished.