Metafile

Metafile is a general term for a file format that can additionally store in itself data (additional information) about data stored in them (files) - information that is hidden from the user in the normal mode of viewing content.

• In text files, this, for example, data on the time of creation and modification of the file, the number of edits;
• In graphic files - additional non-graphic information about the creation date, the tools used and their data, also a watermark ;
• In audio files - information about the artist, recording date, bit rate , genre, etc.

Metafile examples:

• Pict
• WMF ( Windows Metafile )
• EPS (Encapsulated PostScript)
• CGM (Computer Graphics Metafile)
• PDF (Portable Document Format)
• CDR ( Corel Draw File )
• SVG (Scalable Vector Graphics)
• WPG (Word Perfect Graphics File)
• RTF (Rich Text Format file)