Attached is the Hex Editor..
The Hex Editor is a multi-file binary editor which allows for fast
editing of bytes in a file represented in hexidecimal. This editor
also supports unlimited copy/paste/undos, markers, and keyboard/mouse
hilighting. Hex edit also contains a file menu input box for scrolling
through files/directories/drives. Hex Edit also has an IDE interface
with drop down menus and netpath parsing.