Homepage: https://www.gnu.org/software/emacs
Author: Keith Gabryelski
Edit a file in a hex dump format using the hexl filter
This package implements a major mode for editing binary files. It uses a program called hexl, supplied with the GNU Emacs distribution, that can filter a binary into an editable format or from the format back into binary. For full instructions, invoke `hexl-mode' on an empty buffer and do M-x `describe-mode'. NOTE: Remember to change `hexl-program' or `hexl-options' if needed. Currently hexl only supports big endian hex output with 16 bit grouping. -iso in `hexl-options' will allow iso characters to display in the ASCII region of the screen (if your Emacs supports this) instead of changing them to dots.