Central crosshairs size is not correct (Coot 1.1.10)

[olibclarke]

Hi,

The central crosshairs size specified in the settings is not correct. E.g. this is clearly not 2 Å:

Also, it would be good if there was a way to alter the thickness of the crosshairs, rather than the length - they appear to be single-pixel width, and on a high pixel density display this makes them very hard to see, particularly as they are grey, on a black background, in the presence of map and model.