naw it means to go through something. I have the same dense canopy in my 4x4 as my 5x5 barely any light gets through the bottom of my canopy underneath the slim 600 how ever underneath the optic 8 the canopy has way better lighting coming through the canopy because the cobs do a better job at projecting light, thats why they the same tech is used in headless. First hand experience speaks for itself