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Spin up and spin down is just a way to describe the electron's angular momentum (it does not mean that the electrons actually spin in place). Spin up corresponds to an ms value of 1/2 and spin down corresponds -1/2. The spin values won't be written directly in the electron configuration notation, however if you're given something like 1s^2 2s^2 2px^1 2py^1 then we know that the last two electrons are parallel and thus both spin up.
When drawing electron configuration models, another thing to remember is that the electrons are parallel first. This means that there will be an upward arrow in each line drawn before you start pairing them with downward facing arrows.
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