1.1 --- a/src/work/alpar/invalid.h	Sat Mar 13 22:48:43 2004 +0000
     1.2 +++ b/src/work/alpar/invalid.h	Sat Mar 13 22:49:54 2004 +0000
     1.3 @@ -15,7 +15,10 @@
     1.4    
     1.5    /// \ref Invalid is a global type that converts to each iterator
     1.6    /// in such a way that the value of the target iterator will be invalid.
     1.7 -  
     1.8 +
     1.9 +  // It is also used to convert the \c INVALID constant to the
    1.10 +  // node iterator that makes is possible to write 
    1.11 +
    1.12    //extern Invalid INVALID;
    1.13  
    1.14    //const Invalid &INVALID = *(Invalid *)0;