begin{luacode*}
function doline(line)
local splitpoint = string.find(line, "=")
local title = line:sub(1, splitpoint-1)
local description = string.gsub(line:sub(splitpoint + 1), "\par", "n")
tex.print(title)
for token in string.gmatch(description, "[^n]+") do
  tex.print("&\multicolumn{4}{p{11cm}}{" .. token .. "}\\[2pt]")
end
tex.print("\hline")
end
end{luacode*}
newcommand{tabularline}[1]{%
   directlua{
   doline("luatexluaescapestring{detokenize{#1}}")
}}