UI for restraining images

[rogeratlymm]

I am using Quark XPress 2015 for Windows. It drives me mad that the little chain link icon that indicates percentage X and Y is so small that one cannot easily see if it is solid or broken. Is there a simple way of ensuring that the default setting is solid (that is, 100% in both dimensions)?

There is a tip I can pass on: If the chain is broken and one manually changes the X and Y percentages to be the same, press Shift and Control simultaneously while clicking on the box corner. This will then restrain the percentages to remain the same whatever the size of the graphic.