. . . "nt invention. [0020]FIG. 2 is a block diagram illustrating the various repository types and the repository transaction flow between them in the currently preferred embodiment of the present invention. [0021]FIG. 3 is a block diagram of a repository coupled with a credit server in the currently preferred embodiment of the present invention. [0022]FIGS. 4a and 4 b are examples of rendering systems a" .