This means that instead of seeing physically, one sees in the subtle physical or the vital or the mind. But one sees something of me; for instance, if I send out a force or a thought or a movement, an action to someone, in his atmosphere this takes my form, in his mental consciousness it takes my form. So he sees it. It is a fact. I send something and he sees it. It is not my whole being (there the interpretation goes wrong most of the time), but it is something of myself.
It has mostly even a very precise aim: either it is that I want to do something or to say something to someone, or it is that I want to change something in that person or give him some needed knowledge or else I want to put someone on his guard against something put him on his guard, tell him to be careful or else I come to answer a question at times.