diff --git a/crates/typst-library/src/introspection/counter.rs b/crates/typst-library/src/introspection/counter.rs
index f6083303d..a7b0d500b 100644
--- a/crates/typst-library/src/introspection/counter.rs
+++ b/crates/typst-library/src/introspection/counter.rs
@@ -415,6 +415,8 @@ impl Counter {
         /// - If it is a [selector], counts through elements that matches with the
         ///   selector. For example,
         ///   - provide an element function: counts elements of that type,
+        ///   - provide a [`where`]($function.where) selector:
+        ///     counts a type of elements with specific fields,
         ///   - provide a [`{<label>}`]($label): counts elements with that label.
         key: CounterKey,
     ) -> Counter {
diff --git a/crates/typst-library/src/layout/page.rs b/crates/typst-library/src/layout/page.rs
index 64ed99e34..38e4b8492 100644
--- a/crates/typst-library/src/layout/page.rs
+++ b/crates/typst-library/src/layout/page.rs
@@ -397,6 +397,12 @@ impl LocalName for PageElem {
 /// == Compound Theory
 /// In 1984, the first ...
 /// ```
+///
+/// Note that even without manual page breaks, the content will be automatically
+/// paginated based on the size of the content and the page. You could adjust
+/// [costs]($text.costs) to fine-tune the algorithm that prevents widows and
+/// orphans. You can also set [the page height]($page.height) to `{auto}` to
+/// let the page grow dynamically until a manual page break occurs.
 #[elem(title = "Page Break")]
 pub struct PagebreakElem {
     /// If `{true}`, the page break is skipped if the current page is already
diff --git a/crates/typst-library/src/model/figure.rs b/crates/typst-library/src/model/figure.rs
index daab37e44..a3fec123f 100644
--- a/crates/typst-library/src/model/figure.rs
+++ b/crates/typst-library/src/model/figure.rs
@@ -189,6 +189,37 @@ pub struct FigureElem {
     ///   supplement: [Atom],
     /// )
     /// ```
+    ///
+    /// If you want to modify a counter to skip a number or reset the counter,
+    /// you can access the [counter] of each kind of figures from
+    /// a [`where`]($function.where) selector:
+    ///
+    /// - For [tables]($table): `{counter(figure.where(kind: table))}`
+    /// - For [images]($image): `{counter(figure.where(kind: image))}`
+    /// - For a custom kind: `{counter(figure.where(kind: kind))}`
+    ///
+    /// ```example
+    /// #figure(
+    ///   table(columns: 2, $n$, $1$),
+    ///   caption: [The first table.],
+    /// )
+    ///
+    /// #counter(figure.where(kind: table)).update(41)
+    ///
+    /// #figure(
+    ///   table(columns: 2, $n$, $42$),
+    ///   caption: [Jumped to the 42nd table.],
+    /// )
+    ///
+    /// #figure(
+    ///   rect[Image],
+    ///   caption: [And it doesn't affect images.],
+    /// )
+    /// ```
+    ///
+    /// There is also a convenience field called `counter` to simplify general
+    /// [show rules]($styling/#show-rules). There is an example
+    /// [show rule that customizes `figure.caption`]($figure.caption.body) below.
     pub kind: Smart<FigureKind>,
 
     /// The figure's supplement.
@@ -228,8 +259,8 @@ pub struct FigureElem {
     /// Convenience field to get access to the counter for this figure.
     ///
     /// The counter only depends on the `kind`:
-    /// - For (tables)[@table]: `{counter(figure.where(kind: table))}`
-    /// - For (images)[@image]: `{counter(figure.where(kind: image))}`
+    /// - For [tables]($table): `{counter(figure.where(kind: table))}`
+    /// - For [images]($image): `{counter(figure.where(kind: image))}`
     /// - For a custom kind: `{counter(figure.where(kind: kind))}`
     ///
     /// These are the counters you'll need to modify if you want to skip a
diff --git a/crates/typst-library/src/text/mod.rs b/crates/typst-library/src/text/mod.rs
index f2025f5b8..a6a13b92f 100644
--- a/crates/typst-library/src/text/mod.rs
+++ b/crates/typst-library/src/text/mod.rs
@@ -411,6 +411,9 @@ pub struct TextElem {
     /// = Einleitung
     /// In diesem Dokument, ...
     /// ```
+    ///
+    /// The language code is case-insensitive, and will be normalized to
+    /// lowercase before made available to the [context]($context).
     #[default(Lang::ENGLISH)]
     #[ghost]
     pub lang: Lang,
@@ -418,6 +421,9 @@ pub struct TextElem {
     /// An [ISO 3166-1 alpha-2 region code.](https://en.wikipedia.org/wiki/ISO_3166-1_alpha-2)
     ///
     /// This lets the text processing pipeline make more informed choices.
+    ///
+    /// The region code is case-insensitive, and will be normalized to
+    /// uppercase before made available to the [context]($context).
     #[ghost]
     pub region: Option<Region>,