How to turn off levels in a nested reference?

Hi all, I am fairly new to the software, so please bear with me. My company has a "nest" file of all the surveys we receive so we can put that one file into any of our other files. My problem is that...
How do I turn off this background grid graphic?

This appears in every type of model I create. Never seen It before, don't know why I'm seeing it now. It is visually obstructing my existing pavement markings. What even is this and what is it for? I...
How can you gather large scale existing elevation information based off of an alignment?

Currently to get existing elevations based off of the alignment I use Civil Accudraw's Station-Offset feature along with the Analyze Between Points tool. However, I was hoping for a way to automate this...
Point Coding Example

Product(s): OpenRoads Deisgner, OpenSite Desginer Version(s): 10.10+ Area: Survey Question: Can you provide an example of the linking codes available in OpenRoads Survey?...
Point Coding example files

https://communities.bentley.com/products/road___site_design/w/road_and_site_design__wiki/16136/point-coding-example