3 // Searches the center vertical line above center and below, in both the old
4 // and new fields, but takes averages. These are even pixel addresses.
5 MERGE4PIXavg("(%%"XDI", %%"XCX", 2)", "(%%"XSI")") // down, up
6 MERGE4PIXavg("(%%"XDI")", "(%%"XSI", %%"XCX", 2)") // up, down