18. The computer system of claim 15 , wherein program instructions to generate the second GUI display comprise: program instructions to generate alternative GUI displays with different languages, using substituted language strings from the second language bundle.
18. The computer system of claim 15 , wherein program instructions to generate the second GUI display comprise: program instructions to generate alternative GUI displays with different languages, using substituted language strings from the second language bundle. 20. The computer system of claim 18 , wherein the alternative GUI displays are recreated on a non-visible area by reconstructing controls and setting the controls' attributes to build clones of the first GUI display, and wherein the non-visible area is a side, off-screen display.