is not present in the kernel
      pool or is present but is not character valued, string will be
      returned as a null string, size will be returned with the value 0 
      and found will be set to SPICEFALSE.
 
   2) If the variable specified has a blank string associated 
      with its nth full string, string will be blank, size 
      will be 1 and found will be set to SPICETRUE.
 
   3) If string is not long enough to hold all of the characters 
      associated with the nth string, it will be trun