Width of highlighted line

Hi.
I'm having trouble, some of the time, in seeing just what lines are highlighted when selected, in the (default) yellow.
I know how to change the colour.
I know how to change the vertex size.
But I'd really like to increase the width of the highlight line.
I've written 'like' but it's more like 'need' as my eyesight is not what it was.

Try this
http://www.digitalfossils.com/Download/NVil-May-02-15.rar

Edit > Reference > General > Highlighted edge width.

The width of other edge presentations are not possible to change.

Thanks!
That makes life easier.
Shame that the 'selected' line width cannot be increased as that would be even more helpful.