[Notepad-plus-plus] Inserted, edited and deleted line highlighting

[Wallace McGee]

Hi people who love NotePad++

I have installed many versions of Notepad++ over the years (some prior
to the installer so I just unzipped over my old folder made a new folder
and copied xml files across).

Sometime during this I had the pleasure of seeing each line added/edited
or deleted highlighted with a little green/orange or red bar in the left
margin.

Since I have been using the installer this does not happen and I cant
find anything in the settings, the xmls or google relating to turning
this on.

Can anyone point me in the right direction?

Thanks.
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