Trend Line recognition in MQL.

[ForexTrader17]

MQL can detect up to two trend lines on a chart. An upper and a lower trend line. Correct? How does it detect which is which in my attached chart? Is one drawn from highs an upper trend line and one drawn from lows a lower trend line? Or MQl recognizes the one above price as upper and one below price as lower?

Thank you. 

[Marco vd Heijden]

by

OBJPROP_NAME

or

OBJPROP_PRICE

and etc.