From: marcov@stack.nl   
      
   On 2004-11-17, Joe S.  wrote:   
   > The idea is that the user can write a procedure for validating a   
   > particular type of input, and pass it to the various input procedures.   
   > Here's an example:   
   >   
   > write('Enter an even integer between 4 and 18: ');   
   > nreadln(n, mycheck);   
      
   I can't remember exactly how BP did it, but try  @mycheck?   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)