An installation and method for etching at least one wafer coated with an etch-ready, blank photosensitive layer is disclosed. The first portion can include at least one flat thereon for engagement with a recess in a first tool. Each virtual environment is invisible to other virtual environments within the system and has a completely independent root file system. The cam lever also leverages a disengagement force applied to the driver member to separate the electrical distribution center from the electrical connector. These IMOs also will be useful, as an \u03b1-glucosidase inhibitor, in a therapeutic application for several diseases, including obesity, diabetes mellitus, pre-diabetes, gastritis, gastric ulcer, duodenal ulcer, caries, cancer, viral disease such as hepatitis B and C, HIV, and AIDS.