# The UFID (Unique File Identifier) Edit Panel

The Unique File Identifier edit panel is used to display and edit UFIDs for the current file selection.

All editing and manipulation is done via the context menu and is described here.

According to the ID3 specification, this field type is a binary field consisting of at most 64 bytes of data. As the field is typically used to contain a MusicBrainz track identifier, the field is displayed in a string representation. Binary characters are displayed and may be entered as \xx. Where xx is any hexadecimal character (0-9, A-F or a-f).