blackboard

do
mon = peripheral.wrap("right")
mon.setCursorPos(1,0)
mon.clear()
print("Welcome to BlackBoard!")
print("Type in anything and it will display on the monitor.")
print("Have fun!")
while true do
 local input = read()
 if input == "(:clearscreen" then
  print("Clearing screen...")
  sleep(1)
  mon.clear()
  mon.setCursorPos(1,0)
 else
  if input == "(:clearline" then
   print("Clearing line...")
   sleep(1)
   mon.clearLine()
   currx, curry = mon.getCursorPos()
   mon.setCursorPos(1, curry - 1)
  else
   if input == "help" then
    print("Tip: Type '(:' before a command for it to work.")
    print("COMMANDS:")
    print("clearline - clears the line you just typed.")
    print("clearscreen - clears the whole screen.")
    print("exit - exits BlackBoard.")
   else
    if input == "(:exit" then
     print("Thank you for using BlackBoard!")
     sleep(0.5)
     mon.clear()
     error()
    else
     if input == "(:scroll" then
      mon.scroll(1)
     else
      if input == "colours" then
       print("COLOUR TEXT:")
       print("Tip: add 'CL:' before the name of a colour to make it work.")
       print("After typing in your colour type in the text.")
       print("COLOURS:")
       print("red")
       print("blue")
       print("More to be added.")
      else
       if input == "colors" then
        print("COLOR TEXT:")
        print("Tip: add 'CL:' before the name of a color to make it work.")
        print("After typing in your color type in the text.")
        print("COLORS:")
        print("red")
        print("blue")
        print("More to be added.")
       else
        if input == "CL:red" then
         local input = read()
         mon.setTextColor(16384)
         currx, curry = mon.getCursorPos()
         mon.setCursorPos(1, curry + 1)
         mon.write(input)
         mon.setTextColor(1)
        else
         if input == "CL:blue" then
          local input = read()
          mon.setTextColor(2048)
          currx, curry = mon.getCursorPos()
          mon.setCursorPos(1, curry + 1)
          mon.write(input)
          mon.setTextColor(1)
         else
          currx, curry = mon.getCursorPos()
          mon.setCursorPos(1, curry + 1)
          mon.write(input)
         end
        end
       end
      end
     end
    end
   end
  end
 end
end
end