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Stronger `iNext` that performs arithmetic cancelation 3 of 3 checklist items completed!109
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Generic `iAlways` tactic. 3 of 3 checklist items completed!111 gen_proofmode
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Use `NoBackTrack` type class for framing with ▷ 1 of 1 checklist item completed!112
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Super `iModIntro` tactic that generalizes `iAlways`, `iNext`, `iModIntro`, and more 7 of 7 checklist items completed!121 gen_proofmode