1. Sometimes after deleting some geometry, there are some lines that look ghosted which appear to be related to my original now-deleted geometry. What are they and how can i prevent them from ever appearing?
For example, I draw a hexagon, extrude it, transform it, etc. Upon deleting it, there's a hexagon – or part of one still appearing. Cannot select it, nor delete it.
2. Is there a way to change the color of the background? I prefer the background to be white. If the grid can be changed to a different color that would be great.