ComputerCraft remote controller program

rcmdlst = {
    [0] = "bmb",[79] = "place",[80] = "back",[81] = "ddn",[75] = "turnLeft",[76] = "tnl",
    [77] = "turnRight",[71] = "placeUp",[72] = "dfd",[73] = "dup",[82] = "placeDown",
    [83] = "drop",[74] = "refuel",[78] = "slct",[181] = "gpshst",[55] = "gpslct",[28] = "pckup",
    [210] = "place",[211] = "dig",[199] = "dropUp",[207] = "dropDown",[201] = "up",[209] = "down",
    [200] = "forward",[208] = "back",[203] = "turnLeft",[205] = "turnRight",[26] = "digUp",
    [27] = "digDown",[51] = "suckUp",[52] = "suckDown",[45] = "trmn8RC",
}
local cldt = {}
function opnmdm()
    for i,v in pairs(rs.getSides()) do
        if peripheral.getType(v) == "modem" then
            if not rednet.isOpen(v) then rednet.open(v) end
        return true end
    end
return false end

shell.run('clear')
if not opnmdm() then print("Modem Access Error") return false end
repeat
    print("Enter confirmation password for remote turtle control")
    rednet.broadcast(io.read())
    cldt[1],cldt[2] = rednet.receive(2)
    if cldt[1] then print(cldt[1]..": "..cldt[2]) end
until cldt[2] == "password accepted"
print("Use numberpad to control turtleID"..cldt[1].."\n"..[[284693 for dig-moves, 5 to tunnel
170 to place[Up/Down]
'.' Home End, to drop[Up/Down]
Enter, <, >, to suck[Up/Down]
Del, [, ] to dig [Up/Down] without moving
Direction Keys and PgUp/Dn to move
Press x to end Remote Control]])
cldt[3] = false
repeat
    cldt[4],cldt[5],cldt[6] = os.pullEvent()
    if cldt[4] == "key" and rcmdlst[cldt[5]] then rednet.broadcast(rcmdlst[cldt[5]])
        if cldt[5] == 45 then cldt[3] = true end
    elseif cldt[4] == "rednet_message" then print(cldt[5]..": "..cldt[6])
        if string.find(cldt[6],"^send") then rednet.send(cldt[5],io.read()) end
    elseif cldt[5] == "S" then write("Enter message> ") rednet.broadcast(io.read()) end
until cldt[3]