The invention provides a method for performing copy back operations. The largest data value within the selected group of data values is determined. The feed gas comprises at least 99. The trench extends to a first depth position in the semiconductor substrate. A locking lip turns upon activation of the locking mechanism and extends above the flange when the device is closed, and a cam within the bottom portion pushes a bolt attached to the pressing surface upon activation of the locking mechanism, thereby pressing the flexible tube against the resting surface. The value of the selected template is stored in ASCII format for display, validation andor manipulation.