local function center(str, width)
	local blank = string.rep(' ',math.floor((width-#str)/2))
	return blank .. str
end

function send()
p11 = string.sub(p1,1,((string.len(p1)+1)/2))
p12 = string.sub(p1,((string.len(p1)+1)/2))
p21 = string.sub(p2,1,((string.len(p2)+1)/2))
p22 = string.sub(p2,((string.len(p2)+1)/2))
p31 = string.sub(p3,1,((string.len(p3)+1)/2))
p32 = string.sub(p3,((string.len(p3)+1)/2))
p41 = string.sub(p4,1,((string.len(p4)+1)/2))
p42 = string.sub(p4,((string.len(p4)+1)/2))
p51 = string.sub(p5,1,((string.len(p5)+1)/2))
p52 = string.sub(p5,((string.len(p5)+1)/2))
p61 = string.sub(p6,1,((string.len(p6)+1)/2))
p62 = string.sub(p6,((string.len(p6)+1)/2))
p71 = string.sub(p7,1,((string.len(p7)+1)/2))
p72 = string.sub(p7,((string.len(p7)+1)/2))
print("SetSign,"..p11..","..p21..","..p31..","..p41..","..p51..","..p61..","..p71)
end

function split(str, pat)
  local t = { }
  local fpat = "(.-)"..pat
  local last_end = 1
  local s, e, cap = str:find(fpat, 1)
  while s do
    if s ~= 1 or cap ~= "" then
      table.insert(t,cap)
    end
    last_end = e+1
    s, e, cap = str:find(fpat, last_end)
  end
  if last_end <= #str then
    cap = str:sub(last_end)
    table.insert(t, cap)
  end
  return t
end

function printc(stri,coordx,coordy)
	term.setCursorPos(coordx,coordy)
	write(stri)
end

function changetext()
local w,h = term.getSize()
term.clear()