diff --git a/crates/typst-library/src/pdf/accessibility.rs b/crates/typst-library/src/pdf/accessibility.rs
index 086a172bf..a5df131d6 100644
--- a/crates/typst-library/src/pdf/accessibility.rs
+++ b/crates/typst-library/src/pdf/accessibility.rs
@@ -192,10 +192,11 @@ pub enum TableHeaderScope {
 /// TODO: maybe generalize this and use it to mark html elements with `aria-hidden="true"`?
 #[elem(Locatable, Show)]
 pub struct ArtifactElem {
+    /// The artifact kind.
     #[default(ArtifactKind::Other)]
     pub kind: ArtifactKind,
 
-    /// The content to underline.
+    /// The content that is an artifact.
     #[required]
     pub body: Content,
 }
diff --git a/crates/typst-pdf/src/tags.rs b/crates/typst-pdf/src/tags.rs
index 4795edef8..b03279a5b 100644
--- a/crates/typst-pdf/src/tags.rs
+++ b/crates/typst-pdf/src/tags.rs
@@ -325,9 +325,8 @@ pub(crate) fn handle_start(gc: &mut GlobalContext, elem: &Content) {
             .and_then(StackEntryKind::as_standard_mut)
             .filter(|tag| tag.kind == TagKind::Figure);
         if let Some(figure_tag) = figure_tag {
+            // Set alt text of outer figure tag, if not present.
             if figure_tag.alt_text.is_none() {
-                // HACK: set alt text of outer figure tag, if the contained image
-                // has alt text specified
                 figure_tag.alt_text = alt;
             }
             return;