This editor is mainly meant as a demonstration of the multi-level undo/redo mechanism, not as a really useful application. It is a line-oriented editor like in the good old days of DOS 'edlin' ;-).
The editor provides the following commands:
Command | Command description |
h | Command help |
i | Insert line |
d | Delete line |
j | Move to previous line |
k | Move to next line |
c | Output current line |
o | Output whole text |
w | Clear text buffer |
u | Undo command |
r | Redo command |
z | Resize history |
l | Load text |
s | Save text |
q | Quit editor |