字体文件生成问题

在cocos的例子中
LabelAtlasTest::LabelAtlasTest()
{
m_time = 0;

CCLabelAtlas* label1 = CCLabelAtlas::create("123 Test", "fonts/tuffy_bold_italic-charmap.plist");
addChild(label1, 0, kTagSprite1);
label1->setPosition( ccp(10,100) );
label1->setOpacity( 200 );

CCLabelAtlas *label2 = CCLabelAtlas::create("0123456789", "fonts/tuffy_bold_italic-charmap.plist");
addChild(label2, 0, kTagSprite2);
label2->setPosition( ccp(10,200) );
label2->setOpacity( 32 );

schedule(schedule_selector(LabelAtlasTest::step)); 

}
上面文件tuffy_bold_italic-charmap.plist 和对应的tuffy_bold_italic-charmap.png用啥工具生成的??

BMFont:7::7: