multilingual programs

[Matthias Mann]

Has anybody some experience on what's the best way to write programs that may 
interact in multiple languages?

My first thought was to extract all texts from the source and put them into a 
big list or array. The program then accesses the list corresponding to the 
selected language.

Any other (better) ideas? Should inputs, e.g. answers to yes-no-questions, be 
handled the same?

Thanks,

Matthias Mann
Johann Wolfgang Goethe-Universität,
Frankfurt, Germany