local p = {}  local format = string.format -- Local version of string formatting function  local function hatnote(args)  local insert = table.insert  local text = {args.region_note}  local tense   local hatnoteArg = args.hatnote  if hatnoteArg == 'off' then  insert(text, '')  elseif hatnoteArg then  insert(text, hatnoteArg .. " ")  else  local indep_city = args.indep_city  local sub1 = args.sub1  local sub2 = args.sub2  if indep_city or sub1 or sub2 then  local region = args.region  tense = args.former == 'yes'  local verb = tense and 'was' or 'is'  insert(text, format("The entire %s %s in ", args.type or 'route', verb))  if indep_city then  insert(text, format("[[%s, %s|%s]]", indep_city, region, indep_city))  else  local sub1name = args.sub1name  if sub2 then  insert(text, "[[" .. sub2)  local area = args.area  if area then  insert(text, format(" (%s)", area))  end  if args.sub1dab == 'yes' then  insert(text, format(", %s %s", sub1, sub1name))  end  insert(text, format(", %s|%s]]", region, sub2))  end  if sub1 then  if sub2 then  insert(text, ', ')  end  insert(text, format("[[%s %s, %s|%s %s]]", sub1, sub1name, region, sub1, sub1name))  end  end  insert(text, '. ')  insert(text, args.sub1_ref)  insert(text, args.sub2_ref)  end  end   if args.unnum == 'yes' then  insert(text, format("All exits %s unnumbered.", tense and 'were' or 'are'))  end   return mw.text.trim(table.concat(text)) end  local function header(args)  local row = mw.html.create('tr')  local region_col = args.region_col  if region_col then  row:tag('th'):attr('scope', 'col'):wikitext(mw.language.getContentLanguage():ucfirst(region_col))  end   local indep_city = args.indep_city  if not(args.nosub1 == 'yes' or args.sub1 or indep_city) then  local tag = row:tag('th'):attr('scope', 'col')  local sub1disp = args.sub1disp  if sub1disp then  tag:wikitext(sub1disp)  else  tag:wikitext(args.sub1name):wikitext(args.sub1_ref)  end  end   if not(args.sub2 or indep_city) then  row:tag('th'):attr('scope', 'col')  :wikitext(args.location_def or 'ตำแหน่งที่ตั้ง'):wikitext(args.sub2_ref)  end   local altunit = args.altunit  if altunit then  row:tag('th'):attr('scope', 'col'):wikitext(altunit):wikitext(args.altunit_ref)  else  local unit = args.length or args.unit  if unit ~= 'off' then  row:tag('th'):attr('scope', 'col'):wikitext(unit):wikitext(args.length_ref):done():tag('th'):attr('scope', 'col'):wikitext(args.unit2)  end  end   local exit = args[1]  if exit == 'old' then  row:tag('th'):attr('scope', 'col'):wikitext(args.old_def or 'ทางออกเดิม'):wikitext(args.old_ref)  row:tag('th'):attr('scope', 'col'):wikitext(args.exit_def or 'ทางออกใหม่'):wikitext(args.exit_ref)  elseif exit == 'exit' then  row:tag('th'):attr('scope', 'col'):wikitext(args.exit_def or 'ทางออก'):wikitext(args.exit_ref)  end   if args[2] == 'name' then  row:tag('th'):attr('scope', 'col'):wikitext(args.name_def or 'ชื่อ'):wikitext(args.name_ref)  end   row:tag('th'):attr('scope', 'col'):wikitext(args.dest_def or 'จุดหมายปลายทาง'):wikitext(args.dest_ref)   row:tag('th'):attr('scope', 'col'):wikitext(args.notes_def or 'หมายเหตุ'):wikitext(args.notes_ref)   return '\n{| class="plainrowheaders wikitable hlist"\n' .. tostring(row) end  function p._jcttop(args)  -- This function calls two other functions to generate a hatnote and header row.  -- This function is accessible from other Lua modules.  return hatnote(args) .. header(args) end  function p.jcttop(frame)  -- Entry function for {{jcttop/core}}  return p._jcttop(require('Module:Arguments').getArgs(frame)) -- Simply call another function with those arguments to actually create the header. end  return p