These alerts are similar to the "Crossed above open (confirmed)" alert.  These alerts use the same statistical analysis of the price, but they compare the price to other technical levels.

The 200 day moving average is the traditional way to determine if the stock is up or down in the long term.  This technical level is a staple for institutional traders.

The 50 and 20 day moving averages are commonly used by many different types of traders.

The VWAP is often used by institutions to grade their traders.  The VWAP can also be used to set prices on institutional orders.