A method of preparing a stepped structure in a multi-layer film stack on a substrate is described. A server may create a file in response to the information and allocate space in a storage to the file. One or more servers at a remote facility receive the request with the one or more parameters, and use the parameters to identify a targeted message. The reordering method is used where two scan chains comprising an unknown value exist in a single scan cycle so that the unknown values can be located during different clock cycles.