Edited wiki page KnownBugs through web user interface and was too lazy to enter a helpful commit log message, again! Should be ashamed.
#summary little tidbits that await proper structuring
how to add a settings option
QStringList HWGame::setArguments() in game.cpp is the function that prepares the argument list
void GameUIConfig::SaveOptions() in gameuiconfig.cpp loads (or initializes) values and set the widgets to those values
PageOptions::PageOptions(QWidget* parent) : AbstractPage(parent) is where you would add your widget