Does this ZagAndZig indi repaint it Buy/Sell Signal?

 

This is an indicator found on this forum. I've known that this indicator repaints ZigZag buffers(buf 0,1,2,3). It seems that it also repaints trading signals( buf 4, 5, 6), but i'm not sure.

Could proficient programmer please tell me whether it repaint its' trading signal? Is is possible to repaint only the zigzag, but not the signals?

Thank you.

Files:
zigandzag.mq4  15 kb