Editing a File

You can move around the file using the arrow keys, the numeric keypad, the scrollbar on the left of the buffer display or by clicking into display with a mouse. Clicking into the hex or ascii display will activate hex or ascii editing mode. The active display is indicated by a full cursor, while the other one displays cursor as an outline.

In ascii mode, you can edit the file pretty much as with any text editor. In hex mode, you can change the value of the nibble (four bits, a half of a byte) under the cursor with keys '0' .. '9' and 'a' .. 'f', representing the hex digits.