.ncz Compressed Flat Format

This file format is the HTML based file format (same as .ncd) with added step of zlib data stream compression. This usually means that document saved in this file format takes only 30% of the disk size of the same document being saved in .ncd file format. The .ncz format is most useful when file storage space is tight and for sharing documents online (download, email etc.).

Format header:

- format signature text "NOTECASE" (8 bytes)
- version format string - equals "zlib1" for this version (5 bytes)
- size (64-bit integer) of an original (unencrypted) file - currently not used (8 bytes)
- compressed stream size (64-bit integer) (8 bytes)