+ {0, "scene", OPT_SCENEFILE, "scene file to open"},
+ {'m', "music", OPT_MUSIC, "play background audio"},
+ {'r', "reflect", OPT_REFLECT, "render reflections"},
+ {0, "url", OPT_DATAURL, "data URL"},
+ {0, "minturn", OPT_MIN_TURN, "minimum turn angle"},