diff --git a/parser/src/blocks/is_block.rs b/parser/src/blocks/is_block.rs
index 9f64949a..bb399b86 100644
--- a/parser/src/blocks/is_block.rs
+++ b/parser/src/blocks/is_block.rs
@@ -36,6 +36,23 @@ pub trait IsBlock<'src>: HasSpan<'src> + Clone + Debug + Eq + PartialEq {
     /// built-in context. That transformation is not performed by this function.
     fn raw_context(&self) -> CowStr<'src>;
 
+    /// Returns the declared (uninterpreted) style for this block.
+    ///
+    /// Above some blocks, you may notice a name at the start of the block
+    /// attribute list (e.g., `[source]` or `[verse]`). The first positional
+    /// (unnamed) attribute in the block attribute list is used to declare the
+    /// block style.
+    ///
+    /// The declared block style is the value the author supplies.
+    ///
+    /// That value is then interpreted and resolved. That interpretation is not
+    /// performed by this function.
+    fn declared_style(&'src self) -> Option<Span<'src>> {
+        self.attrlist()
+            .and_then(|attrlist| attrlist.nth_attribute(1))
+            .and_then(|attr| attr.block_style())
+    }
+
     /// Returns an iterator over the nested blocks contained within
     /// this block.
     ///
diff --git a/parser/src/tests/asciidoc_lang/blocks/index.rs b/parser/src/tests/asciidoc_lang/blocks/index.rs
index e9572e63..93785b42 100644
--- a/parser/src/tests/asciidoc_lang/blocks/index.rs
+++ b/parser/src/tests/asciidoc_lang/blocks/index.rs
@@ -103,6 +103,7 @@ You can think of the context as the block's type.
             .unwrap();
 
         assert_eq!(mi.item.raw_context().deref(), "section");
+        assert!(mi.item.declared_style().is_none());
     }
 
     #[test]
@@ -309,8 +310,8 @@ In the converter, these blocks must be accessed from their parent block.
 
 mod block_style {
     use crate::{
-        blocks::{Block, IsBlock},
-        tests::sdd::{non_normative, to_do_verifies},
+        blocks::{Block, ContentModel, IsBlock},
+        tests::{fixtures::TSpan, sdd::{non_normative, verifies}},
         Span,
     };
 
@@ -335,9 +336,8 @@ The resolved block style, if non-empty, specializes the block's context.
     );
 
     #[test]
-    #[ignore]
     fn source_block() {
-        to_do_verifies!(
+        verifies!(
             r#"
 Consider the following example of a source block:
 
@@ -364,8 +364,16 @@ The context of the block is still the same, but it has additional metadata to in
         .unwrap();
 
         assert_eq!(mi.item.raw_context().as_ref(), "listing");
-        // assert_eq!(mi.item.style(), "source");
-        // assert_eq!(mi.item.content_model(), ContentModel::Verbatim);
+
+        assert_eq!(mi.item.declared_style().unwrap(),
+                TSpan {
+                    data: "source",
+                    line: 1,
+                    col: 2,
+                    offset: 1,
+                });
+
+        assert_eq!(mi.item.content_model(), ContentModel::Verbatim);
     }
 
     // TO DO: Cover the remainder ...
diff --git a/parser/src/tests/blocks/block/compound_delimited.rs b/parser/src/tests/blocks/block/compound_delimited.rs
index 2fb07074..ad28e4d3 100644
--- a/parser/src/tests/blocks/block/compound_delimited.rs
+++ b/parser/src/tests/blocks/block/compound_delimited.rs
@@ -206,6 +206,7 @@ mod example {
 
         assert_eq!(mi.item.content_model(), ContentModel::Compound);
         assert_eq!(mi.item.raw_context().as_ref(), "example");
+        assert!(mi.item.declared_style().is_none());
         assert!(mi.item.nested_blocks().next().is_none());
         assert!(mi.item.title().is_none());
         assert!(mi.item.attrlist().is_none());
diff --git a/parser/src/tests/blocks/block/mod.rs b/parser/src/tests/blocks/block/mod.rs
index f7fbc88f..ba5f2a55 100644
--- a/parser/src/tests/blocks/block/mod.rs
+++ b/parser/src/tests/blocks/block/mod.rs
@@ -44,6 +44,7 @@ mod error_cases {
 
         assert_eq!(mi.item.content_model(), ContentModel::Compound);
         assert_eq!(mi.item.raw_context().deref(), "section");
+        assert!(mi.item.declared_style().is_none());
         assert!(mi.item.title().is_none());
         assert!(mi.item.attrlist().is_none());
 
@@ -153,6 +154,7 @@ mod error_cases {
 
         assert_eq!(mi.item.content_model(), ContentModel::Simple);
         assert_eq!(mi.item.raw_context().deref(), "paragraph");
+        assert!(mi.item.declared_style().is_none());
         assert!(mi.item.title().is_none());
         assert!(mi.item.attrlist().is_none());
 
@@ -215,6 +217,7 @@ mod error_cases {
 
         assert_eq!(mi.item.content_model(), ContentModel::Compound);
         assert_eq!(mi.item.raw_context().deref(), "section");
+        assert!(mi.item.declared_style().is_none());
         assert!(mi.item.title().is_none());
 
         assert_eq!(
diff --git a/parser/src/tests/blocks/block/raw_delimited.rs b/parser/src/tests/blocks/block/raw_delimited.rs
index 7d6c4f00..7e5c609f 100644
--- a/parser/src/tests/blocks/block/raw_delimited.rs
+++ b/parser/src/tests/blocks/block/raw_delimited.rs
@@ -210,6 +210,7 @@ mod comment {
 
         assert_eq!(mi.item.content_model(), ContentModel::Raw);
         assert_eq!(mi.item.raw_context().as_ref(), "comment");
+        assert!(mi.item.declared_style().is_none());
         assert!(mi.item.title().is_none());
         assert!(mi.item.attrlist().is_none());
     }
@@ -257,6 +258,7 @@ mod comment {
 
         assert_eq!(mi.item.content_model(), ContentModel::Raw);
         assert_eq!(mi.item.raw_context().as_ref(), "comment");
+        assert!(mi.item.declared_style().is_none());
 
         assert_eq!(
             mi.item.title().unwrap(),
@@ -309,6 +311,7 @@ mod comment {
 
         assert_eq!(mi.item.content_model(), ContentModel::Raw);
         assert_eq!(mi.item.raw_context().as_ref(), "comment");
+        assert!(mi.item.declared_style().is_none());
         assert!(mi.item.title().is_none());
         assert!(mi.item.attrlist().is_none());
     }
@@ -357,6 +360,7 @@ mod comment {
 
         assert_eq!(mi.item.content_model(), ContentModel::Raw);
         assert_eq!(mi.item.raw_context().as_ref(), "comment");
+        assert!(mi.item.declared_style().is_none());
         assert!(mi.item.title().is_none());
         assert!(mi.item.attrlist().is_none());
     }
@@ -400,6 +404,7 @@ mod listing {
 
         assert_eq!(mi.item.content_model(), ContentModel::Verbatim);
         assert_eq!(mi.item.raw_context().as_ref(), "listing");
+        assert!(mi.item.declared_style().is_none());
         assert!(mi.item.title().is_none());
         assert!(mi.item.attrlist().is_none());
     }
@@ -442,6 +447,7 @@ mod listing {
 
         assert_eq!(mi.item.content_model(), ContentModel::Verbatim);
         assert_eq!(mi.item.raw_context().as_ref(), "listing");
+        assert!(mi.item.declared_style().is_none());
         assert_eq!(mi.item.nested_blocks().next(), None);
         assert!(mi.item.title().is_none());
         assert!(mi.item.attrlist().is_none());
@@ -500,6 +506,7 @@ mod listing {
 
         assert_eq!(mi.item.content_model(), ContentModel::Verbatim);
         assert_eq!(mi.item.raw_context().as_ref(), "listing");
+        assert!(mi.item.declared_style().is_none());
         assert_eq!(mi.item.nested_blocks().next(), None);
 
         assert_eq!(
@@ -569,6 +576,7 @@ mod listing {
 
         assert_eq!(mi.item.content_model(), ContentModel::Verbatim);
         assert_eq!(mi.item.raw_context().as_ref(), "listing");
+        assert!(mi.item.declared_style().is_none());
         assert_eq!(mi.item.nested_blocks().next(), None);
         assert!(mi.item.title().is_none());
         assert!(mi.item.attrlist().is_none());
@@ -623,6 +631,7 @@ mod pass {
 
         assert_eq!(mi.item.content_model(), ContentModel::Raw);
         assert_eq!(mi.item.raw_context().as_ref(), "pass");
+        assert!(mi.item.declared_style().is_none());
         assert_eq!(mi.item.nested_blocks().next(), None);
         assert!(mi.item.title().is_none());
         assert!(mi.item.attrlist().is_none());
@@ -676,6 +685,7 @@ mod pass {
 
         assert_eq!(mi.item.content_model(), ContentModel::Raw);
         assert_eq!(mi.item.raw_context().as_ref(), "pass");
+        assert!(mi.item.declared_style().is_none());
         assert_eq!(mi.item.nested_blocks().next(), None);
         assert!(mi.item.title().is_none());
         assert!(mi.item.attrlist().is_none());
@@ -734,6 +744,7 @@ mod pass {
 
         assert_eq!(mi.item.content_model(), ContentModel::Raw);
         assert_eq!(mi.item.raw_context().as_ref(), "pass");
+        assert!(mi.item.declared_style().is_none());
         assert_eq!(mi.item.nested_blocks().next(), None);
 
         assert_eq!(
@@ -803,6 +814,7 @@ mod pass {
 
         assert_eq!(mi.item.content_model(), ContentModel::Raw);
         assert_eq!(mi.item.raw_context().as_ref(), "pass");
+        assert!(mi.item.declared_style().is_none());
         assert_eq!(mi.item.nested_blocks().next(), None);
         assert!(mi.item.title().is_none());
         assert!(mi.item.attrlist().is_none());
diff --git a/parser/src/tests/blocks/block/section.rs b/parser/src/tests/blocks/block/section.rs
index 16060406..e26958f3 100644
--- a/parser/src/tests/blocks/block/section.rs
+++ b/parser/src/tests/blocks/block/section.rs
@@ -70,6 +70,7 @@ fn simplest_section_block() {
 
     assert_eq!(mi.item.content_model(), ContentModel::Compound);
     assert_eq!(mi.item.raw_context().deref(), "section");
+    assert!(mi.item.declared_style().is_none());
     assert!(mi.item.title().is_none());
     assert!(mi.item.attrlist().is_none());
 
@@ -116,6 +117,7 @@ fn has_child_block() {
 
     assert_eq!(mi.item.content_model(), ContentModel::Compound);
     assert_eq!(mi.item.raw_context().deref(), "section");
+    assert!(mi.item.declared_style().is_none());
     assert!(mi.item.title().is_none());
     assert!(mi.item.attrlist().is_none());
 
@@ -209,6 +211,7 @@ fn title() {
 
     assert_eq!(mi.item.content_model(), ContentModel::Compound);
     assert_eq!(mi.item.raw_context().deref(), "section");
+    assert!(mi.item.declared_style().is_none());
 
     assert_eq!(
         mi.item,
diff --git a/parser/src/tests/blocks/block/simple.rs b/parser/src/tests/blocks/block/simple.rs
index 5c582e1a..299f1ca2 100644
--- a/parser/src/tests/blocks/block/simple.rs
+++ b/parser/src/tests/blocks/block/simple.rs
@@ -76,6 +76,7 @@ fn single_line() {
 
     assert_eq!(mi.item.content_model(), ContentModel::Simple);
     assert_eq!(mi.item.raw_context().deref(), "paragraph");
+    assert!(mi.item.declared_style().is_none());
     assert_eq!(mi.item.nested_blocks().next(), None);
     assert!(mi.item.title().is_none());
     assert!(mi.item.attrlist().is_none());
diff --git a/parser/src/tests/blocks/compound_delimited.rs b/parser/src/tests/blocks/compound_delimited.rs
index 91f0fa34..47eaafa1 100644
--- a/parser/src/tests/blocks/compound_delimited.rs
+++ b/parser/src/tests/blocks/compound_delimited.rs
@@ -253,6 +253,7 @@ mod example {
 
         assert_eq!(mi.item.content_model(), ContentModel::Compound);
         assert_eq!(mi.item.raw_context().as_ref(), "example");
+        assert!(mi.item.declared_style().is_none());
         assert!(mi.item.nested_blocks().next().is_none());
         assert!(mi.item.title().is_none());
         assert!(mi.item.attrlist().is_none());
@@ -316,6 +317,7 @@ mod example {
 
         assert_eq!(mi.item.content_model(), ContentModel::Compound);
         assert_eq!(mi.item.raw_context().as_ref(), "example");
+        assert!(mi.item.declared_style().is_none());
         assert!(mi.item.title().is_none());
         assert!(mi.item.attrlist().is_none());
 
@@ -434,6 +436,7 @@ mod example {
 
         assert_eq!(mi.item.content_model(), ContentModel::Compound);
         assert_eq!(mi.item.raw_context().as_ref(), "example");
+        assert!(mi.item.declared_style().is_none());
         assert!(mi.item.title().is_none());
         assert!(mi.item.attrlist().is_none());
 
@@ -561,6 +564,7 @@ mod open {
 
         assert_eq!(mi.item.content_model(), ContentModel::Compound);
         assert_eq!(mi.item.raw_context().as_ref(), "open");
+        assert!(mi.item.declared_style().is_none());
         assert!(mi.item.nested_blocks().next().is_none());
         assert!(mi.item.title().is_none());
         assert!(mi.item.attrlist().is_none());
@@ -624,6 +628,7 @@ mod open {
 
         assert_eq!(mi.item.content_model(), ContentModel::Compound);
         assert_eq!(mi.item.raw_context().as_ref(), "open");
+        assert!(mi.item.declared_style().is_none());
         assert!(mi.item.title().is_none());
         assert!(mi.item.attrlist().is_none());
 
@@ -753,6 +758,7 @@ mod open {
 
         assert_eq!(mi.item.content_model(), ContentModel::Compound);
         assert_eq!(mi.item.raw_context().as_ref(), "open");
+        assert!(mi.item.declared_style().is_none());
         assert!(mi.item.title().is_none());
         assert!(mi.item.attrlist().is_none());
 
@@ -859,6 +865,7 @@ mod sidebar {
 
         assert_eq!(mi.item.content_model(), ContentModel::Compound);
         assert_eq!(mi.item.raw_context().as_ref(), "sidebar");
+        assert!(mi.item.declared_style().is_none());
         assert!(mi.item.nested_blocks().next().is_none());
         assert!(mi.item.title().is_none());
         assert!(mi.item.attrlist().is_none());
@@ -922,6 +929,7 @@ mod sidebar {
 
         assert_eq!(mi.item.content_model(), ContentModel::Compound);
         assert_eq!(mi.item.raw_context().as_ref(), "sidebar");
+        assert!(mi.item.declared_style().is_none());
         assert!(mi.item.title().is_none());
         assert!(mi.item.attrlist().is_none());
 
@@ -1040,6 +1048,7 @@ mod sidebar {
 
         assert_eq!(mi.item.content_model(), ContentModel::Compound);
         assert_eq!(mi.item.raw_context().as_ref(), "sidebar");
+        assert!(mi.item.declared_style().is_none());
         assert!(mi.item.title().is_none());
         assert!(mi.item.attrlist().is_none());
 
@@ -1179,6 +1188,7 @@ mod quote {
 
         assert_eq!(mi.item.content_model(), ContentModel::Compound);
         assert_eq!(mi.item.raw_context().as_ref(), "quote");
+        assert!(mi.item.declared_style().is_none());
         assert!(mi.item.nested_blocks().next().is_none());
         assert!(mi.item.title().is_none());
         assert!(mi.item.attrlist().is_none());
@@ -1242,6 +1252,7 @@ mod quote {
 
         assert_eq!(mi.item.content_model(), ContentModel::Compound);
         assert_eq!(mi.item.raw_context().as_ref(), "quote");
+        assert!(mi.item.declared_style().is_none());
         assert!(mi.item.title().is_none());
         assert!(mi.item.attrlist().is_none());
 
@@ -1360,6 +1371,7 @@ mod quote {
 
         assert_eq!(mi.item.content_model(), ContentModel::Compound);
         assert_eq!(mi.item.raw_context().as_ref(), "quote");
+        assert!(mi.item.declared_style().is_none());
         assert!(mi.item.title().is_none());
         assert!(mi.item.attrlist().is_none());
 
diff --git a/parser/src/tests/blocks/macro.rs b/parser/src/tests/blocks/macro.rs
index 4c066c04..97b0c82e 100644
--- a/parser/src/tests/blocks/macro.rs
+++ b/parser/src/tests/blocks/macro.rs
@@ -128,6 +128,7 @@ fn simplest_block_macro() {
 
     assert_eq!(mi.item.content_model(), ContentModel::Simple);
     assert_eq!(mi.item.raw_context().deref(), "paragraph");
+    assert!(mi.item.declared_style().is_none());
     assert!(mi.item.title().is_none());
     assert!(mi.item.attrlist().is_none());
 
diff --git a/parser/src/tests/blocks/raw_delimited.rs b/parser/src/tests/blocks/raw_delimited.rs
index 56364038..f6121fab 100644
--- a/parser/src/tests/blocks/raw_delimited.rs
+++ b/parser/src/tests/blocks/raw_delimited.rs
@@ -168,6 +168,7 @@ mod comment {
 
         assert_eq!(mi.item.content_model(), ContentModel::Raw);
         assert_eq!(mi.item.raw_context().as_ref(), "comment");
+        assert!(mi.item.declared_style().is_none());
         assert!(mi.item.lines().next().is_none());
         assert!(mi.item.title().is_none());
         assert!(mi.item.attrlist().is_none());
@@ -211,6 +212,7 @@ mod comment {
 
         assert_eq!(mi.item.content_model(), ContentModel::Raw);
         assert_eq!(mi.item.raw_context().as_ref(), "comment");
+        assert!(mi.item.declared_style().is_none());
         assert!(mi.item.title().is_none());
         assert!(mi.item.attrlist().is_none());
 
@@ -283,6 +285,7 @@ mod comment {
 
         assert_eq!(mi.item.content_model(), ContentModel::Raw);
         assert_eq!(mi.item.raw_context().as_ref(), "comment");
+        assert!(mi.item.declared_style().is_none());
         assert!(mi.item.title().is_none());
         assert!(mi.item.attrlist().is_none());
 
@@ -368,6 +371,7 @@ mod listing {
 
         assert_eq!(mi.item.content_model(), ContentModel::Verbatim);
         assert_eq!(mi.item.raw_context().as_ref(), "listing");
+        assert!(mi.item.declared_style().is_none());
         assert!(mi.item.lines().next().is_none());
         assert!(mi.item.title().is_none());
         assert!(mi.item.attrlist().is_none());
@@ -411,6 +415,7 @@ mod listing {
 
         assert_eq!(mi.item.content_model(), ContentModel::Verbatim);
         assert_eq!(mi.item.raw_context().as_ref(), "listing");
+        assert!(mi.item.declared_style().is_none());
         assert!(mi.item.title().is_none());
         assert!(mi.item.attrlist().is_none());
 
@@ -483,6 +488,7 @@ mod listing {
 
         assert_eq!(mi.item.content_model(), ContentModel::Verbatim);
         assert_eq!(mi.item.raw_context().as_ref(), "listing");
+        assert!(mi.item.declared_style().is_none());
         assert!(mi.item.title().is_none());
         assert!(mi.item.attrlist().is_none());
 
@@ -588,6 +594,7 @@ mod pass {
 
         assert_eq!(mi.item.content_model(), ContentModel::Raw);
         assert_eq!(mi.item.raw_context().as_ref(), "pass");
+        assert!(mi.item.declared_style().is_none());
         assert!(mi.item.lines().next().is_none());
         assert!(mi.item.title().is_none());
         assert!(mi.item.attrlist().is_none());
@@ -631,6 +638,7 @@ mod pass {
 
         assert_eq!(mi.item.content_model(), ContentModel::Raw);
         assert_eq!(mi.item.raw_context().as_ref(), "pass");
+        assert!(mi.item.declared_style().is_none());
         assert!(mi.item.title().is_none());
         assert!(mi.item.attrlist().is_none());
 
@@ -703,6 +711,7 @@ mod pass {
 
         assert_eq!(mi.item.content_model(), ContentModel::Raw);
         assert_eq!(mi.item.raw_context().as_ref(), "pass");
+        assert!(mi.item.declared_style().is_none());
         assert!(mi.item.title().is_none());
         assert!(mi.item.attrlist().is_none());
 
diff --git a/parser/src/tests/blocks/section.rs b/parser/src/tests/blocks/section.rs
index 74df81b0..a3381ea4 100644
--- a/parser/src/tests/blocks/section.rs
+++ b/parser/src/tests/blocks/section.rs
@@ -50,6 +50,7 @@ fn simplest_section_block() {
 
     assert_eq!(mi.item.content_model(), ContentModel::Compound);
     assert_eq!(mi.item.raw_context().deref(), "section");
+    assert!(mi.item.declared_style().is_none());
     assert!(mi.item.title().is_none());
     assert!(mi.item.attrlist().is_none());
 
@@ -94,6 +95,7 @@ fn has_child_block() {
 
     assert_eq!(mi.item.content_model(), ContentModel::Compound);
     assert_eq!(mi.item.raw_context().deref(), "section");
+    assert!(mi.item.declared_style().is_none());
     assert!(mi.item.title().is_none());
     assert!(mi.item.attrlist().is_none());
 
@@ -155,6 +157,7 @@ fn has_macro_block_with_extra_blank_line() {
 
     assert_eq!(mi.item.content_model(), ContentModel::Compound);
     assert_eq!(mi.item.raw_context().deref(), "section");
+    assert!(mi.item.declared_style().is_none());
     assert!(mi.item.title().is_none());
     assert!(mi.item.attrlist().is_none());
 
@@ -296,6 +299,7 @@ fn has_child_block_with_errors() {
 
     assert_eq!(mi.item.content_model(), ContentModel::Compound);
     assert_eq!(mi.item.raw_context().deref(), "section");
+    assert!(mi.item.declared_style().is_none());
     assert!(mi.item.title().is_none());
     assert!(mi.item.attrlist().is_none());
 
@@ -449,6 +453,7 @@ fn dont_stop_at_child_section() {
 
     assert_eq!(mi.item.content_model(), ContentModel::Compound);
     assert_eq!(mi.item.raw_context().deref(), "section");
+    assert!(mi.item.declared_style().is_none());
     assert!(mi.item.title().is_none());
     assert!(mi.item.attrlist().is_none());
 
@@ -545,6 +550,7 @@ fn stop_at_peer_section() {
 
     assert_eq!(mi.item.content_model(), ContentModel::Compound);
     assert_eq!(mi.item.raw_context().deref(), "section");
+    assert!(mi.item.declared_style().is_none());
     assert!(mi.item.title().is_none());
     assert!(mi.item.attrlist().is_none());
 
@@ -607,6 +613,7 @@ fn stop_at_ancestor_section() {
 
     assert_eq!(mi.item.content_model(), ContentModel::Compound);
     assert_eq!(mi.item.raw_context().deref(), "section");
+    assert!(mi.item.declared_style().is_none());
     assert!(mi.item.title().is_none());
     assert!(mi.item.attrlist().is_none());
 
diff --git a/parser/src/tests/blocks/simple.rs b/parser/src/tests/blocks/simple.rs
index 2efd7c8e..8f14a3d2 100644
--- a/parser/src/tests/blocks/simple.rs
+++ b/parser/src/tests/blocks/simple.rs
@@ -51,6 +51,7 @@ fn single_line() {
 
     assert_eq!(mi.item.content_model(), ContentModel::Simple);
     assert_eq!(mi.item.raw_context().deref(), "paragraph");
+    assert!(mi.item.declared_style().is_none());
     assert!(mi.item.title().is_none());
     assert!(mi.item.attrlist().is_none());
 
diff --git a/parser/src/tests/document/document.rs b/parser/src/tests/document/document.rs
index 4cc94c6d..fb66f63b 100644
--- a/parser/src/tests/document/document.rs
+++ b/parser/src/tests/document/document.rs
@@ -30,6 +30,7 @@ fn empty_source() {
 
     assert_eq!(doc.content_model(), ContentModel::Compound);
     assert_eq!(doc.raw_context().deref(), "document");
+    assert!(doc.declared_style().is_none());
     assert!(doc.title().is_none());
     assert!(doc.attrlist().is_none());