Draw_Section

 
Hi all
I'm a beginner of mql4 programming I need som information about draw_section. How does it work exactly? What is the difference betwin draw_line and draw_section? Can anyone explain about it or show me some refrences about it in the internet?
Thanks
 
Draw line draws from point to point on each bar -- example, line chart

Draw Section Draws from point to point (ignoring bars with the indicator value setting EMPTY_VALUE) -- example ZigZag