main.lua

local modDirectory = g_currentModDirectory

function loadHelplines()
  self.helpLineManager:loadFromXML(Utils.getFilename("helpLine.xml", modDirectory))
end

function load(mission)
  loadHelplines()
end

function init()
  -- Loading of your own hints needs to happen after the basegame initializes, but before the mission is loaded
  Mission00.load = Utils.prependedFunction(Mission00.load, load)
end

init()