INI goes to VIM

I have modified Denford Starmill , changing all electronics, no problems. Loaded version 2.7.14 and have completed Stepconf Wizard and everything appears to be good. Now l go to the INI file to change offsets and l get coloured text in VIM, somethings wrong ! Help, thanks.

use GEDIT if you do not want colors

Ok, that sounds good, however if l try to change the value offset by highlighting then deleting, l cannot add a number! Or if l highlight the type a number, it doesn't work! Any pointers would be much appreciated.

I was expecting black on white text! However l am not able to alter offsets for example by highlighting then deleting, cant input new figure! thank you for your time.

Install geany
Use geany
Geany good
Geany multi tab
Geany easy
Geany not be made by the dumbs

Seriously geany is a great editor
Or if you prefer a console text editor , install mc (midnight commander).
Start mc find you file, press F4 on your highlighted file and start editing. I tend to do most things with mc