local function fn()
    io.write(string.format("Usage: %s ACTION\n\nACTION may be one of\n", arg[0]))
    local sal = {}
    for _, v in pairs(ACTIONS) do
        table.insert(sal, v.desc)
    end
    table.sort(sal)
    for _, v in ipairs(sal) do
        io.write(string.format("\t%s\n", v))
    end
end

return { desc = "(h)elp", nd = false, fn = fn }