请教cocos2dx 动画播放 里面的 aniEnterGame aniLeg 是怎么来的新手不明白？

Cocos2d-x
#1

auto aniEnterGame = CSLoader::createTimeline(“menu.csb”);
sysMenu->runAction(aniEnterGame);
aniEnterGame->gotoFrameAndPlay(0, 60, false);

auto aniLeg = CSLoader::createTimeline(“menu.csb”);
sysMenu->runAction(aniLeg);
aniLeg->gotoFrameAndPlay(62,64,true);