{"textDocument": {"uri": "file:///1403.lean"},
 "position": {"line": 1, "character": 2}}
{"range":
 {"start": {"line": 1, "character": 2}, "end": {"line": 1, "character": 12}},
 "contents":
 {"value":
  "`rewrite [e]` applies identity `e` as a rewrite rule to the target of the main goal.\nIf `e` is preceded by left arrow (`←` or `<-`), the rewrite is applied in the reverse direction.\nIf `e` is a defined constant, then the equational theorems associated with `e` are used.\nThis provides a convenient way to unfold `e`.\n- `rewrite [e₁, ..., eₙ]` applies the given rules sequentially.\n- `rewrite [e] at l` rewrites `e` at location(s) `l`, where `l` is either `*` or a\n  list of hypotheses in the local context. In the latter case, a turnstile `⊢` or `|-`\n  can also be used, to signify the target of the goal.\n\nUsing `rw (occs := .pos L) [e]`,\nwhere `L : List Nat`, you can control which \"occurrences\" are rewritten.\n(This option applies to each rule, so usually this will only be used with a single rule.)\nOccurrences count from `1`.\nAt each allowed occurrence, arguments of the rewrite rule `e` may be instantiated,\nrestricting which later rewrites can be found.\n(Disallowed occurrences do not result in instantiation.)\n`(occs := .neg L)` allows skipping specified occurrences.\n",
  "kind": "markdown"}}