In Open Type Designer the font used in the code editor is somewhat small on a high DPI screen.
Is there a way of setting the size and/or font used ? I have had a quick look in the options and nothing stood out.
If there isn’t a way of setting the font of the code editior then there ought to be.
Click the gear-wheels icon at top right of the Code Editor dialogue to set the Code Editor options.
Click the gear-wheels icon at top right of the OpenType dialogue to set the options for that dialogue.

Thanks.
I thought there was a way but I must have missed the icon.
MikeW
4
I missed it as well until BP pointed it out to me once.
The defaults are not practical. This looks like a bug. FontCreator 10.1 suffers from the same issue.

This is indeed a bug. It will be fixed with the next upcoming release.