stroke.capType

Flash 8.

stroke.capType

Property; a string that specifies the type of cap for the stroke. Acceptable values are "none", "round", and "square".

The following example sets the stroke cap type to "round":

var myStroke = fl.getDocumentDOM().getCustomStroke(); 
myStroke.capType = "round"; 
fl.getDocumentDOM().setCustomStroke(myStroke);