Starting from the usability of the survey by extremely diversified users (architects, historians, tourists, etc.), the need arises to have to access, for each part of the monument, information (selectable in real time) of a textual, graphic type , photographic and cinematographic, in addition to all those of a dynamic type made available by new technologies. In general, we can believe that the relief of any object (in the absence of a clear finalization) consists of a collection of information suitable to give, for a minimum of each object, an answer to three questions:
1) what is it ?. Continuing to take the relief of the church of Cisternino as a point of reference, we cannot fail to take note of the fact that the relief was carried out taking for granted the knowledge of the object of the relief. In reality, if we want the survey to be an instrument of knowledge, we cannot fail to foresee that its implementation begins with the documentation necessary to know the problems connected with the object of the survey and that it is an integral part of the survey.
The advantage of hypertext over paper writing is the possibility of communicating a message with a very limited number of terms, for the interpretation of which an entire library system can be available in real time.
Thus, when we write the word church, we can create a link to the legislation on Italian ecclesiastical cultural heritage, in order to analyze institutional subjects, church-state-association-private relations, general problems, relations between goods and cultural services, protection, enhancement, adaptation and creation.
2) what is it for? Again in the case of a church relief, answering this question with the simple phrase "building of worship" can mean not having given any answer. Considering that, in hypertext, a connection involves a simple differentiation of the written word, it would be advisable for the detector to refer to the documentation taken into consideration in the survey. So the word "church" can connected to the note of the C.E.I. for the design of new churches, or to the Roman Missal, or to the Roman Pontifical, or to the Code of Canon Law. Since the survey ultimately represents a moment of verification of the detected object, in the case of the church it is necessary first of all to verify whether the detected environment has characteristics satisfying the liturgical meaning of the church, and already to understand this, consultation of an expert in liturgy.
3) how does it work? Still with reference, the relief of the church would seem superfluous to pretend that the detector knows the functioning of the object of the relief, but, in architecture, one could safely say "throw the first stone whoever has detected something without having studied its functioning first". If we were in the mechanical sector such a statement would appear at least scandalous: who, in fact, would be able to repair an engine without knowing how it works! In architecture, however, this is possible. Let's take, as an example, the central element of a church: the altar. In practice it is a plan (or a table) on which some functions must be performed.
According to the Note of the Commission of the C.E.I. for the building of worship and the National Council for ecclesiastical cultural heritage, in the suggestions for the adaptation of old churches, on the altar, reads:
The altar in the liturgical assembly is not simply a useful object for the celebration, but it is the sign of the presence of Christ, priest and victim, it is the table of sacrifice and Easter meal that the Father prepares for his children in the common house, source of charity and unity. For this reason it is necessary that the altar be visible to everyone, so that everyone feels called to take part in it and it is obviously necessary that it is unique in the church, in order to be the visible center to which the gathered community addresses itself.
Its location is of fundamental importance for the proper conduct of the liturgical action and must be such as to ensure full meaning for the celebration.
The conformation and location of the altar must make it possible for the celebration to be addressed to the people and must allow you to turn around it and easily carry out all the liturgical gestures inherent to it.
If the existing altar meets the needs just indicated, enhance it and use it. Otherwise it is necessary to proceed with the design of a new possibly fixed and, in any case, definitive altar.
The shape and dimensions of the new altar must be different from those of the existing altar, avoiding formal and stylistic references based on mere imitation. To evoke the dual dimension of the canteen of the sacrifice and Easter meal, in accordance with tradition, the

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