> curl --data @- -X POST --dump - http://localhost:8529/_api/explain
{ "query" : "FOR u IN users FILTER u.id == @id LIMIT 2 RETURN u.name", "bindVars": { "id" : 3 } }

HTTP/1.1 200 OK
content-type: application/json

{
  "plan": [
    { 
      "id" : 1, 
      "loopLevel" : 1, 
      "type" : "for", 
      "resultVariable" : "u", 
      "expression" : { 
        "type" : "collection", 
        "value" : "users", 
        "extra" : { 
          "accessType" : "all" 
        } 
      } 
    },
    { 
      "id" : 2, 
      "loopLevel" : 1, 
      "type" : "filter", 
      "expression" : { 
        "type" : "expression", 
        "value" : "u.id == 3" 
      } 
    },
    { 
      "id" : 3, 
      "loopLevel" : 1, 
      "type" : "limit", 
      "offset" : 0, 
      "count" : 2 
    },
    { 
      "id" : 4, 
      "loopLevel" : 1, 
      "type" : "limit", 
      "offset" : 0, 
      "count" : 2 
    },
    { 
      "id" : 5, 
      "loopLevel" : 1, 
      "type" : "return", 
      "expression" : { 
        "type" : "expression", 
        "value" : "u.name" 
      } 
    }
  ],
  "error": false,
  "code": 200
}