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Update content/docs/rfcs/13/README.md 

Co-authored-by: Oskar Thorén <ot@oskarthoren.com>
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Sanaz Taheri Boshrooyeh 2021-04-08 14:09:06 -07:00 committed by GitHub
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@ -86,7 +86,7 @@ To perform pagination, each `WakuMessage` stored at a node running the `WakuStor
RPC call to query historical messages.
- The `contentTopics` field MUST indicate the list of content topics to query.
The items in this list correspond to the `contentTopic` of the queried Waku messages (see [14/WAKU-MESSAGE](../14)).
The items in this list correspond to the `contentTopic` of the queried Waku messages (see [14/WAKU-MESSAGE](/spec/14)).
- `PagingInfo` holds the information required for pagination. Its `pageSize` field indicates the number of `WakuMessage`s to be included in the corresponding `HistoryResponse`. If the `pageSize` is zero then no pagination is required. If the `pageSize` exceeds a threshold then the threshold value shall be used instead. In the forward pagination request, the `messages` field of the `HistoryResponse` shall contain at maximum the `pageSize` amount of waku messages whose `Index` values are larger than the given `cursor` (and vise versa for the backward pagination). Note that the `cursor` of a `HistoryQuery` may be empty (e.g., for the initial query), as such, and depending on whether the `direction` is `BACKWARD` or `FORWARD` the last or the first `pageSize` waku messages shall be returned, respectively.
The queried node MUST sort the `WakuMessage`s based on their `Index`, where the `receivedTime` constitutes the most significant part and the `digest` comes next, and then perform pagination on the sorted result. As such, the retrieved page contains an ordered list of `WakuMessage`s from the oldest message to the most recent one.