No that changes something about how lines are displayed when going diagonal over the screen AFAIK. Nothing to do with direction as to oneway.

On Fri, 14 May 2021, 15:03 Ticker Berkin <ticker@jagit.co.uk> wrote:
Hi

My understanding: No, it just forces the icon to rotated so that in the
same direction as the points in the line.

Ticker

On Fri, 2021-05-14 at 06:09 +0000, Gerd Petermann wrote:
> Hi all,
>
> I just noticed the UseOrientation=Y/N setting in TYP files. Is this
> related to the direction flag of the line in IMG?
>
> Gerd
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