After some discussion spells that heal a portion of a body are target 1. The same would hold for non-lethal damage to a limb. Say cutting the Achilles tendon of a target, blinding them etc.
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Setting a broken bone would be a Target 1 spell.
Poisoning someone is clearly a Target 2 spell.
Basically, for healing and direct damage: A single wound healed or caused will usually be a Target 1 spell, major damage (or wounds that cause terminal effects to the entire being) are usually Target 2.
