Remember that tip we gave you about showing more than seven days in a week in iCal? It’s been a while, but there used to be a way to enable a Debug menu in iCal to allow you to open multiple iCal windows, change the number of weeks that appear before and after the start date in Day View, and even show more than just seven days in a week.

Well, that debug menu has gone away in Mountain Lion, but we found a cool Terminal command that does something similar.

There are a host of hidden debug settings in iOS that developers, security researchers, hackers, and others use to analyze data and fix errors. While most normal users won’t care to look through their iMessage logs, the more inquisitive may feel dangerous enough to try.