To determine whether a tool may be used successfully to fabricate a worksheet in a sheet fabrication machine, data relating to all tools that may be used for the machine as provided by the manufacturers of those tools are stored in a tool database. The system breaks each web page into regions or screen space areas and then assigns exclusive access rights to each region. However, the filling material must be chosen properly, for otherwise, the material can leave behind a scum-like residue which then can erupt like a volcano during the subsequent process steps, which in turn can lead to functionality as well as reliability problems.