I thought I would share a recent embarrassing discovery as the first half dozen people I mentioned it to didn't realize it either.
Each line tool (line, circle, polyline and spline) when you look in their tool default settings box (control T), has a check box for "uniform settings for line tools". It's also in the Info box pallets.
This WONDERFUL feature, when checked, gives all types of lines i.e. line, circle, polyline and spline the same pen, line type and layer setting.
This means that when you are working in a layer combination and change to another layer combination, you don't have to reset all this info for each of these tools. Just make sure this box is checked and all these tools will have these same settings. Change it once and the rest will follow.
It''s a like a mini attribute change between tools.
I don't know if I explained this clearly enough, but it is new in 8 at some point and I just love it.
MacBook Pro Retina, 15-inch Yosemite 2.8 GHz Intel Core i7 16 GB 1600 MHz DDR3
Mac OSX 10.11.1
"Implementing Successful Building Information Modeling"