Hex editor

From PHWiki

A hex editor is a program that allows a user to edit binary (non-text) files such as roms or saved games. It displays the file in a table with three columns: the offset from the beginning of the file to the beginning of this row (in bytes), a string of bytes in hexadecimal (usually 16 bytes wide), and the same bytes in some character encoding (usually ASCII, but some hex editors allow use of "table" files that describe alternate encodings). The user can type hex digits into the hex column or characters into the character column.

External links

• wikipedia:Hex editor