7. A method for selectively convening a process diagram displayed on a computer display including text labels in a first language to at least one second language during operation of the computer display, comprising the steps of: generating the process diagram on the computer display for simulating a predetermined process system, the process diagram including presentations of at least one of text, graphics and units of measure according to the first language, the process diagram, as generated, representing process parameter value and process configuration information reflecting a process; encoding and storing definitions of additional presentations for at least part of at least one of the text, graphics and units of measure, according to the at least one second language, the additional presentations being different than the presentations according to the first language, but representing the same said process parameter value and process configuration information; operating a control input for initiating a conversion to the second language; reading the definitions of the additional presentations; and, generating the process diagram on the computer display for simulating the predetermined process system according to the second language for at least part of the process diagram reflecting the process, whereby display of the same said information is at least partly convertible by user control during operation of the computer display.
7. A method for selectively convening a process diagram displayed on a computer display including text labels in a first language to at least one second language during operation of the computer display, comprising the steps of: generating the process diagram on the computer display for simulating a predetermined process system, the process diagram including presentations of at least one of text, graphics and units of measure according to the first language, the process diagram, as generated, representing process parameter value and process configuration information reflecting a process; encoding and storing definitions of additional presentations for at least part of at least one of the text, graphics and units of measure, according to the at least one second language, the additional presentations being different than the presentations according to the first language, but representing the same said process parameter value and process configuration information; operating a control input for initiating a conversion to the second language; reading the definitions of the additional presentations; and, generating the process diagram on the computer display for simulating the predetermined process system according to the second language for at least part of the process diagram reflecting the process, whereby display of the same said information is at least partly convertible by user control during operation of the computer display. 9. The method of claim 7, further comprising defining and storing a first subset of choices and at least one additional subset of choices, that encode corresponding definitions of the at least one of text, graphics and units of measure, and wherein said reading and said generating in the second language comprise selectively changing between the first subset and the at least one additional subset.