Lines of single_doc/NH-02.md from check-in 827568f715 that are changed by the sequence of edits moving toward check-in 5b20ec5765:

                         1: % NH-02
                         2: 
                         3: # 规避副作用
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                         5: 选用具有<b>强制性效果</b>的卡片，比如「娱乐决斗」。