From: nowhere@never.at   
      
   Benjamin David Lunt wrote:   
   >>>> If your strings contain also numbers then a OR 0x20 would work   
   >>>> while AND 0xDF wont.   
      
   >>> Why not?  If guarenteed to only have alpha and numeric chars, an   
   >>> AND will work also.  Numeric chars have bit 6 cleared, while alpha   
   >>> chars have bit 6 set.   
      
   >> ??? don't we talk about bit 5 here (Ucase vs. Lcase) ?   
   >> If you clear bit 5 on a number ie: 0x30 it becomes a '0x10'.   
      
   > This was with the assumption that there would be only alpha and   
   > numeric characters (and the dot).   
      
   Yeah, both AND/OR work as long you compare 'known' strings, but   
   Filenames may contain padding spaces beside "_~" and a few more.   
      
   I found the OR more save than the AND on FileName and ASCIIZ compares,   
   because a Space would match a Zero with AND. Yes it matches a Zero with   
   OR as well :) but I check for Zero in the second string before the OR.   
   __   
   wolfgang   
      
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