Here is everything you need to know about the Syntax layer in AutoCAD from formulating the name of the layer and also arranging curves and lines within it...
Simple steps I make it essential to build any scheme in order, accuracy and very easily As can be seen in (image1).
also see (image2) that showing layers should be in your Autocad lock like that
Image 1 layers Syntax Naming
Image 2 Example of clean layers