Paint on the monitor (OpenСomputers)

-- English:
-- A program for drawing in the monitor and output coordinates X and Y
-- Left mouse button paints right erases

-- Russian:
-- Программа для рисования на мониторе и вывода координатов X и Y
-- Левая кнопка мыши красит правая стирает

local event = require("event")
local component = require("component")

while true do
local e = {event.pull()}
 if e[1] == "touch" or e[1] == "drag" then
 component.gpu.fill(1,1,9,2," ")
 component.gpu.set(1,1,"X = "..e[3])
 component.gpu.set(1,2,"Y = "..e[4])
   if e[5] == 1 then
    component.gpu.set(e[3],e[4]," ")
   else
    component.gpu.set(e[3],e[4],"█")
   end
 end
end