ZDE16 - programmers editor

Installation: https://techtinkering.com/2008/10/21/installing-zde-1-6-a-programmers-editor-for-cpm/
Configure COM file:
f:zdenst16 zde16
Keys
ESC h
Bring up the command key help
CTRL+BS
Delete char to left
CTRL+k q / 
ESC q
Quit editor without saving
CTRL+k x / 
ESC x
Exist and Save
CTRL+k l / 
ESC l
Load a new file
CTRL+k s / 
ESC s
Save the current file
CTRL+r
Page up
CTRL+c
Page down
CTRL+e / 
cursor
Line up
CTRL+x / 
cursor
Line down
CTRL+s / 
cursor
Cursor left
CTRL+d / 
cursor
Cursor right