title: R QCCPackage shwehart Rules
body: <p>I´m working with <a href="http://cran.r-project.org/package=qcc" rel="nofollow" title="Quality Control Charts">Quality Control Charts - qcc R package</a>. I need to now how to edit shwehart rules. This is, how can I change the default 8 rules? I see the functions rules, Shewhart.rules, but I can't understand it.</p>