hi Maria,

do you mean symbols used to indicate the exact location of a hand or a touch?

As I know, no one use them! The reason (as I say in my thesis) is that they seems "alien" in a SW figure... Imagine that you want to write a sign with a detailed location symbols. You have to write your sign, and then add in a corner one of those "detailed location symbols": they don't have the same aspect of other glyphs, they don't have the same size, so you can't use them as a base to put others glyphes like configuration or mouvement... they are like "a punch in a eye" (tipical italian expression) and they broke the analogical relation between signing space and SW space.
By the way, on my point of view, they are also useless. Infact, SW have the caracteristic to have a perfect indication of the location that is not "explicit" but is "implicit" (Garcia, from Univ.Paris8, call this "emplacement en creux"), given by the relative location of the others glyphes. When the implicit location is not enough, users put more informations as he position of arms or shoulders.

I hope I gave you a satisfying (and understandable) answer

Claudia