This is a simple command (Y2000 safe) which checks that the PPWIZARD preprocessor is capable of processing your code. You would probably put this command in a header file that you distribute to users. It will validate that the preprocessor they are using is new enough to handle your header file.
[WhiteSpace]#Require ["]MinVersion["]
The "MinVersion" specifies the minumum version number of PPWIZARD. The preprocessing will abort if the preprocessor is too old.
#require 98.216 ;;Want PPWIZARD version 98.216 or greater