XAverage (simple function)

["Joel Reymont" <joelr@xxxxxxxx>]

Folks,

Given that 

input: 
emaLength(20), 

var:
factor1(0);

factor1 = (H - L)*2.5; 

What is the meaning of the following?

factor3 = XAverage(factor1,emaLength); 

I understand the application of XAverage (EMA) when used on close prices,
for example. But what will it do in this case?

	Thanks, Joel