How do I reset MacBook pro with lion back to factory settings without disk?

Good evening everyone,
I recently purchased a MacBook pro with lion installed and I need to reset it to factory settings without a disk. anyone know how to do this?

Restart it... and hold down command+R
then choose disk utility and format your disk
then choose reinstall lion
and it's back to default.
source of info: http://www.maclife.com/article/howtos/how_boot_lion%E2%80%99s_recovery_mode
apple way is most slam.
how u like me now?
i just did this right now and my system so so fresh and pure.

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