>Sorry but maybe I should rephrase the question,
>
>Can I change the variable (assuming there is such a variable) containing the constant 'Visual FoxPro'
>
>The PDF was only an example.

Your question is still not clear. Are you saying you've defined a constant with #DEFINE MyVariable VISUAL FOXPRO and you want to change it somewhere else in your program? If that's your question, you need to use #UNDEF first and then #DEFINE again.