"Psychosociologists often analyse urban spaces as a text of which the semiological analysis would reflect the ideology presiding at their emergence. However, the reduction of spatial structures to a signifier ("signifiant"), that of the dominate ideology to a signified ("signifié") artifically introduces a void between two poles of the same process which is built up by successive mediations between the pro-posed spatial forms, their degree of univocality in the transmission of directives for social practice, and their style of reception by the user. The means of exploration, the exercise of principal or in-terstitial liberty remodels the areas in an exchange whose limits are the very ones of individual creativity in the frame of a determined so-cial order."