Basic scenarios: the first programme it is the owners, but also as standard programme, bidders must use it as a framework to further refining and concretization of an important basis.
The basic program: It is the first program to consider the owners, but also the bidders do mark scheme must return to it as the framework for further detailed and specific to one of the important basis.
Basic solution: it is the owner of the first program to consider, but also in the tender to do the bidding program must be considered as a framework for further refinement and one of the important basis for the specific.