[Docs] Clarify `span_not` query behavior for non-overlapping matches
Closes
[[query-dsl-span-not-query]]
=== Span Not Query
-Removes matches which overlap with another span query. The span not
+Removes matches which overlap with another span query or which are
+within x tokens before (controlled by the parameter `pre`) or y tokens
+after (controled by the parameter `post`) another SpanQuery. The span not
query maps to Lucene `SpanNotQuery`. Here is an example:
[source,js]
@@ -39,7 +41,7 @@ In the above example all documents with the term hoya are filtered except the on
Other top level options:
[horizontal]
-`pre`:: If set the amount of tokens before the include span can't have overlap with the exclude span.
-`post`:: If set the amount of tokens after the include span can't have overlap with the exclude span.
+`pre`:: If set the amount of tokens before the include span can't have overlap with the exclude span. Defaults to 0.
+`post`:: If set the amount of tokens after the include span can't have overlap with the exclude span. Defaults to 0.
`dist`:: If set the amount of tokens from within the include span can't have overlap with the exclude span. Equivalent
of setting both `pre` and `post`.
