It would be really helpful if there was a new tool to help guide your eye through the proof while reading copy heavy documents.
It should be transparent (similar to the measurement tool) and with a color option to easily differentiate from the proof itself. Also should be able to change the height and width of this tool.
With the legacy proof viewer, we used to use the Measurement tool for this purpose. However, with the new viewer, there are measurements that get in the way of proof content and the color cannot be changed.
