Yep. I'm not aware of any language that allows files to be reduced in size without completely re-writing the file - it's not just a blitz thing. If you think about how data is stored on disk, it makes sense.
You can append to an existing file, but if you do this often with large files, the file (sectors) could become fragmented across the disk. This could potentially affect loading times adversely - as well as giving your HD a good workout.
You can append to an existing file, but if you do this often with large files, the file (sectors) could become fragmented across the disk. This could potentially affect loading times adversely - as well as giving your HD a good workout.