The performer Luis Amália works on it generating, in his words, "a series of postcards... showing the expected routine of use and also including other routines (perverted) born out of the ordinary or the space itself... It is important the amalgam/doodle factor, close to hodgepodge, but not too much. It is important to reflect also those vulgar moments of everyday life"
The main feature of GANMA is the free interaction between its four elements, the user and the space. The relationship between them is described as collections of pairs (reaction condition, action), in which the order of combination is ignored; but where multiplicity is especially significant. There is no restriction on how elements should be manipulated, allowing the context of place and the intuition of the user to be implicitly and naturally expressed.