Hello Valerie, Adam and everyone,

Thank you for your answers!

Wow! We were surprised!
Unlearn and learn again is not easy ...

Understood, most of the signs need not surface symbols.
Valerie, is true. There are other symbols already called "position symbols" ...

See this photo and writing. This sign is for "symbol" (symbol) in Libras.
We photographed start position/ end position in the front view and side view, if there is doubt in reading. The sign is in spelling Expressive Viewpoint.

The writing is correct? The surface symbol is used correctly?

I saved this sign in Brazilian SignPuddle.

Madson and Raquel Barreto