I can't find a way to toggle mc internal editor in hex mode. Here it says to use F4 however it suggest to replace. How to do it?
2 Answers
F4 toggles hex mode in the Midnight Commander viewer (accessed using F3), not in the editor. Once in hex mode in the viewer, F2 allows you to make changes to the file being viewed.
As you discovered, F4 in the editor starts a search.
hte
for an actual hex editor.