--Hi Paul,--your understanding is correct: at any level, a proof consists of either a leaf proof or of a sequence of proof steps the last of which is the QED step that closes the current goal of the proof at that level. (Note that the current goal may change due to a SUFFICES step or similar.)Best,StephanOn 21 Aug 2019, at 00:08, Saswata Paul <paulsaswata1@xxxxxxxxx> wrote:Hi,What is the scope of the QED keyword?In my understanding, at any point in a proof, the QED keyword represents the main goal of the level in which it is being used. That goal may be the main theorem of the proof or the goal of a step in a hierarchical proof.I am asking because I have not found this explicitly mentioned anywhere (maybe I have missed some part of the documentation).Thank you--
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