my Latex and Tex4ht cheat sheet

\documentclass[]{article}
\usepackage{luacode}
\begin{luacode*} -- CVS API thanks to http://nocurve.com/simple-csv-read-and-write-using-lua/
local function split(str, sep)
fields={}
local matchfunc = string.gmatch(str, "([^"..sep.."]+)")
if not matchfunc then return {str} end
for str in matchfunc do
table.insert(fields, str)
end
return fields
end
function read(path, sep, tonum)
tonum = tonum or true
sep = sep or ','
local csvFile = {}
local file = assert(io.open(path, "r"))
for line in file:lines() do
fields = split(line, sep)
if tonum then -- convert numeric fields to numbers
for i=1,#fields do
fields[i] = tonumber(fields[i]) or fields[i]
end
end
table.insert(csvFile, fields)
end
file:close()
return csvFile
end
function getCVS(fileName)
local m = read(fileName) -- read file csv1.txt to matrix m
local nRow = #m
local nCol = #m[1]
tex.sprint("\\begin{tabular}{")
for j=1,#m[1] do
tex.sprint("|l")
end
tex.print("|}\\hline")
for i = 1,nRow do
for j = 1,nCol do
tex.sprint(m[i][j])
if j