Add some more documentation

crates/egui/src/frame_state.rs

@@ -42,8 +42,13 @@ pub struct PerLayerState {
 
 #[derive(Clone, Debug)]
 pub struct ScrollTarget {
+    // The range that the scroll area should scroll to.
     pub range: Rangef,
+    /// How should we align the rect within the visible area?
+    /// If `align` is [`Align::TOP`] it means "put the top of the rect at the top of the scroll area", etc.
+    /// If `align` is `None`, it'll scroll enough to bring the UI into view.
     pub align: Option<Align>,
+    /// How should the scroll be animated?
     pub animation: style::ScrollAnimation,
 }
 

crates/egui/src/response.rs

@@ -848,6 +848,7 @@ impl Response {
         self.scroll_to_me_animation(align, self.ctx.style().scroll_animation);
     }
 
+    /// Like [`Self::scroll_to_me`], but allows you to specify the [`crate::style::ScrollAnimation`].
     pub fn scroll_to_me_animation(
         &self,
         align: Option<Align>,