Line of demarcation is where the point where ownership of the communications equipment changes from the communications carrier to the user.POP is the point where the customer connects the network...
A point is a zero-dimensional object. It has no length, width, height, etc. Coordinates are the numerical location of that point. Point A can be at the coordinates (2,3) on a Cartesian grid.
LINEs are Long Interspersed Nuclear Elements SINEs are Short Interspersed Nuclear Elements The only different is the size of the repetitive sequence that gets integrated in the genome.
LINEs are...