Why should a slide not be moved when viewing under high-power magnification?

The slide should be moved when viewing under a high power magnification because if we move it the structure that we are observing may change and sometimes the organism that we are observing may fell down

Hope my answer is helpful to you

Amight be the answer

Are you asking about a street map usage  if so here is your answer  a street map for a very limited area could simply be a bit map or a .jpg image.  but a more general map would probably store the streets as vectors.  but you shouldn't assume that there is one way to do it