File API

function saveToFile(file,tbl)
  local hand = fs.open(file,"w")
  for i=1,#tbl do
    hand.write(tbl[i])
  end
  hand.close()
end

function loadFromFile(file)
  local hand = fs.open(file,"r")
  local n = {}
  repeat
    local ln = hand.readLine()
    if ln then table.insert(n,ln) end
  until not ln
  return n
end