Why are the N, S, E, and W designations often omitted from coordinates on U. S. topographic maps?

In a Topographic map, here are the programming values of each of that navgations:

N = positive value to the latitude

S = Negative value to the Latitude

W = Positive value to the longitude

E = Negative value to the longitude

Most programmers that work to create the topographic map choose to simply ommit the N, S, W,&E because it will save them a lot of time from having to type in a minus sign before most of their longitude values in code writing.