I'm writing a C that will extract and filter hotspot,blackspot,mailspot,and vendorspot from public profiles. I successfully filtered the hotspot,mailspot. I know how to write the filter for vendorspot. My question is how blackspot work. there are parameter radius and height. does it mean blackspot works as a cylindrical coordinate system? If i don't see a height or radius does it mean they are 0? if they are 0 does it mean the bot will only ignore the node spawn at exact same x,y,z coordinate? if t is a cylindrical system, which 2 of the xyz is the parameter for radius, and which one is for height? I apologize for any grammar mistake and misspelling 