[Harp-L] double and triple overblows & overdraws

[Captron100@xxxxxxx]

Jerome wrote re Sebastien Charlier: 
For example, he explains how to produce double or triple overblows and  
overdraws
 
Unfortunately Sebstien's website (http://www.sebcharlier.com/goodies.php )  
is in French, a language i neither speak nor read.  He is great and his  
vids are indeed impressive.  This was asked before but if it was answered,  i 
missed it -- what is a double (or triple) overblow &  overdraw?
Ron - southernmost Harp-L'er (big pine key, FL)