client-api: Add more docs to `get_message_events::Request`s constructors
@@ -112,6 +112,9 @@ pub mod v3 {
/// Creates a new `Request` with the given room ID and `dir` set to `Backward`.
///
+ /// If the returned request is sent without `from` being set, pagination will start at the
+ /// end of (the accessible part of) the room timeline.
+ ///
/// # Example
///
/// ```rust
@@ -126,6 +129,9 @@ pub mod v3 {
/// Creates a new `Request` with the given room ID and `dir` set to `Forward`.
///
+ /// If the returned request is sent without `from` being set, pagination will start at the
+ /// beginning of (the accessible part of) the room timeline.
+ ///
/// # Example
///
/// ```rust
