MLD-2.lua

local monitor = peripheral.wrap("left")
if not monitor then
printError("No monitor found. Please connect a monitor.")
end

function monitorTouchDraw(xPos, yPos, xPos2, yPos2)

while true do

local event, side, xPos, yPos = os.pullEvent("monitor_touch")
local event, side, xPos2, yPos2 = os.pullEvent("monitor_touch")

    break
end

term.redirect(monitor)

paintutils.drawLine(xPos, yPos, xPos2, yPos2, 0x1)

end

while true do
monitorTouchDraw()

    if os.pullEvent("char") then
        local event, character = os.pullEvent("char")
        print(character .. " was pressed. Clearing Screen.")
        term.setBackgroundColor(colours.black)
        term.clear(monitor)
        term.native()
    end
end