10. A user interface system for a process control system, comprising: a computer processor; a computer-readable storage medium having instructions stored thereon which, when executed by the computer processor provide: a graphic display editor to configure a process graphic display having a graphic display element representative of a process plant element of the process control system, wherein the process plant element corresponds to an object entity within an object oriented programming environment that includes the graphic display element, and wherein configuration information for the process graphic display generated by the graphic display editor is stored in the computer-readable medium in accordance with a declarative language, the object entity including the configuration information; a conversion engine for generating commands in accordance with a further declarative language different from the declarative language based on graphics related information of the configuration information and for generating a data source reference file from the configuration information for the process graphic display that identifies a data source for data to be displayed in connection with the graphic display element, and generating commands specifying a data conversion routine for the graphic display element for converting data values from the data source to graphically and dynamically display the data from the data source in association with the display of the graphics display element and to simulate on-line operation of the process plant element, wherein the process graphic display operates to depict both on-line and simulation operation of the process plant element that includes displaying data calculated from the simulation of the process plant element via the graphic display element; and a graphics rendering engine to generate a depiction of the process graphic display during runtime based on commands derived from the configuration information.
10. A user interface system for a process control system, comprising: a computer processor; a computer-readable storage medium having instructions stored thereon which, when executed by the computer processor provide: a graphic display editor to configure a process graphic display having a graphic display element representative of a process plant element of the process control system, wherein the process plant element corresponds to an object entity within an object oriented programming environment that includes the graphic display element, and wherein configuration information for the process graphic display generated by the graphic display editor is stored in the computer-readable medium in accordance with a declarative language, the object entity including the configuration information; a conversion engine for generating commands in accordance with a further declarative language different from the declarative language based on graphics related information of the configuration information and for generating a data source reference file from the configuration information for the process graphic display that identifies a data source for data to be displayed in connection with the graphic display element, and generating commands specifying a data conversion routine for the graphic display element for converting data values from the data source to graphically and dynamically display the data from the data source in association with the display of the graphics display element and to simulate on-line operation of the process plant element, wherein the process graphic display operates to depict both on-line and simulation operation of the process plant element that includes displaying data calculated from the simulation of the process plant element via the graphic display element; and a graphics rendering engine to generate a depiction of the process graphic display during runtime based on commands derived from the configuration information. 16. The user interface system of claim 10 , wherein the declarative language is an extensible markup language.