Optical sheets can be fixed easily and positively in a liquid-crystal display device having a liquid-crystal display panel in which a liquid-crystal layer sandwiched between a pair of substrates and a lighting unit provided on a surface opposite to a display surface of the liquid-crystal display panel. The methods and systems provide the operator the ability to effectively troubleshoot, evaluate, and modify electrochemical treatment processes so that effective results can be achieved and cost savings realized. Further, if a putt is missed, ideally the putt will stop within two to three feet of the hole.