diff --git a/scaladoc-testcases/src/tests/abstractmembersignatures.scala b/scaladoc-testcases/src/tests/abstractmembersignatures.scala
new file mode 100644
index 000000000000..a32336d8f76d
--- /dev/null
+++ b/scaladoc-testcases/src/tests/abstractmembersignatures.scala
@@ -0,0 +1,22 @@
+package tests
+package abstractmembersignatures
+
+
+trait TestTrait:
+  def shouldBeAbstract: Int
+  def shouldBeConcrete: Int = 1
+
+class TestClass:
+  def shouldBeConcrete: Int = 1
+
+abstract class AbstractTestClass:
+  def shouldBeAbstract: Int
+  def shouldBeConcrete: Int = 1
+
+object TestObject:
+  abstract class AbstractInnerClass:
+    def shouldBeAbstract: Int
+    def shouldBeConcrete: Int = 1
+
+  class InnerClass:
+    def shouldBeConcrete: Int = 1
diff --git a/scaladoc-testcases/src/tests/listindocstring.scala b/scaladoc-testcases/src/tests/listindocstring.scala
index 58574d9ab2e2..261817ddb61c 100644
--- a/scaladoc-testcases/src/tests/listindocstring.scala
+++ b/scaladoc-testcases/src/tests/listindocstring.scala
@@ -1,6 +1,9 @@
+package tests
+package listindocstring
+
 /**
  * These are useful methods that exist for both $some and $none.
- *  * [[isDefined]] — True if not empty
+ *  - [[isDefined]] — True if not empty
  *  - [[isEmpty]] — True if empty
  *  - [[nonEmpty]] — True if not empty
  *  - [[orElse]] — Evaluate and return alternate optional value if empty
diff --git a/scaladoc-testcases/src/tests/secondaryconstructor.scala b/scaladoc-testcases/src/tests/secondaryconstructor.scala
new file mode 100644
index 000000000000..41a32469c7bf
--- /dev/null
+++ b/scaladoc-testcases/src/tests/secondaryconstructor.scala
@@ -0,0 +1,7 @@
+package tests
+package secondaryconstructors
+
+class Person(val firstName: String, val lastName: String, val age: Int):
+  def this(firstName: String) = this(firstName, "", 0)
+  def this(firstName: String, lastName: String) = this(firstName, lastName, 0)
+
diff --git a/scaladoc/src/dotty/tools/scaladoc/SourceLinks.scala b/scaladoc/src/dotty/tools/scaladoc/SourceLinks.scala
index 825f1dba4060..7f0cdc830fb7 100644
--- a/scaladoc/src/dotty/tools/scaladoc/SourceLinks.scala
+++ b/scaladoc/src/dotty/tools/scaladoc/SourceLinks.scala
@@ -122,7 +122,7 @@ case class SourceLinks(links: Seq[SourceLink], projectRoot: Path):
     else resolveRelativePath(rawPath)
 
   def pathTo(member: Member): Option[String] =
-    member.sources.flatMap(s => pathTo(Paths.get(s.path), member.name, Option(s.lineNumber).map(_ + 1)))
+    member.sources.flatMap(s => pathTo(s.path, member.name, Option(s.lineNumber).map(_ + 1)))
 
 object SourceLinks:
 
diff --git a/scaladoc/src/dotty/tools/scaladoc/api.scala b/scaladoc/src/dotty/tools/scaladoc/api.scala
index 51f923323826..18715b511cd2 100644
--- a/scaladoc/src/dotty/tools/scaladoc/api.scala
+++ b/scaladoc/src/dotty/tools/scaladoc/api.scala
@@ -28,6 +28,7 @@ enum VisibilityScope:
 
 enum Modifier(val name: String, val prefix: Boolean):
   case Abstract extends Modifier("abstract", true)
+  case Deferred extends Modifier("", true)
   case Final extends Modifier("final", true)
   case Empty extends Modifier("", true)
   case Sealed extends Modifier("sealed", true)
@@ -146,7 +147,7 @@ case class Member(
   modifiers: Seq[Modifier] = Nil,
   annotations: List[Annotation] = Nil,
   signature: Signature = Signature(),
-  sources: Option[TastyDocumentableSource] = None,
+  sources: Option[TastyMemberSource] = None,
   origin: Origin = Origin.RegularlyDefined,
   inheritedFrom: Option[InheritedFrom] = None,
   graph: HierarchyGraph = HierarchyGraph.empty,
@@ -231,4 +232,4 @@ extension (s: Signature)
       case l: Link => l.name
     }.mkString
 
-case class TastyDocumentableSource(val path: String, val lineNumber: Int)
+case class TastyMemberSource(val path: java.nio.file.Path, val lineNumber: Int)
diff --git a/scaladoc/src/dotty/tools/scaladoc/renderers/MemberRenderer.scala b/scaladoc/src/dotty/tools/scaladoc/renderers/MemberRenderer.scala
index 560f50b259b7..cdc23bf54359 100644
--- a/scaladoc/src/dotty/tools/scaladoc/renderers/MemberRenderer.scala
+++ b/scaladoc/src/dotty/tools/scaladoc/renderers/MemberRenderer.scala
@@ -68,7 +68,7 @@ class MemberRenderer(signatureRenderer: SignatureRenderer)(using DocContext) ext
 
   def source(m: Member): Seq[AppliedTag] =
     summon[DocContext].sourceLinks.pathTo(m).fold(Nil){ link =>
-      tableRow("Source", a(href := link)("(source)"))
+      tableRow("Source", a(href := link)(m.sources.fold("(source)")(_.path.getFileName().toString())))
     }
 
   def deprecation(m: Member): Seq[AppliedTag] = m.deprecated.fold(Nil){ a =>
@@ -123,7 +123,7 @@ class MemberRenderer(signatureRenderer: SignatureRenderer)(using DocContext) ext
     case _ => Nil
   }
 
-  def memberSingnature(member: Member) =
+  def memberSignature(member: Member) =
     val depStyle = if member.deprecated.isEmpty then "" else "deprecated"
     val nameClasses = cls := s"documentableName $depStyle"
 
@@ -164,7 +164,7 @@ class MemberRenderer(signatureRenderer: SignatureRenderer)(using DocContext) ext
     div(topLevelAttr:_*)(
       a(href := (if member.needsOwnPage then link(member.dri).getOrElse("#") else s"#${member.dri.anchor}"), cls := "documentableAnchor"),
       div(annotations(member)),
-      div(cls := "header monospace")(memberSingnature(member)),
+      div(cls := "header monospace")(memberSignature(member)),
       div(cls := "docs")(
         span(cls := "modifiers"), // just to have padding on left
         div(
@@ -202,22 +202,34 @@ class MemberRenderer(signatureRenderer: SignatureRenderer)(using DocContext) ext
     case m: Member => m.inheritedFrom.nonEmpty
     case g: MGroup => g.members.exists(isInherited)
 
+  private def isAbstract(m: Member | MGroup): Boolean = m match
+    case m: Member => m.modifiers.exists(Set(Modifier.Abstract, Modifier.Deferred).contains)
+    case g: MGroup => g.members.exists(isAbstract)
+
   private type SubGroup = (String, Seq[Member | MGroup])
   private def buildGroup(name: String, subgroups: Seq[SubGroup]): Tab =
     val all = subgroups.map { case (name, members) =>
       val (allInherited, allDefined) = members.partition(isInherited)
       val (depDefined, defined) = allDefined.partition(isDeprecated)
       val (depInherited, inherited) = allInherited.partition(isDeprecated)
-      (
-        actualGroup(name, defined),
-        actualGroup(s"Deprecated ${name.toLowerCase}", depDefined),
-        actualGroup(s"Inherited ${name.toLowerCase}", inherited),
-        actualGroup(s"Deprecated and Inherited ${name.toLowerCase}", depInherited)
+      val normalizedName = name.toLowerCase
+      val definedWithGroup = if Set("methods", "fields").contains(normalizedName) then
+          val (abstr, concr) = defined.partition(isAbstract)
+          Seq(
+            actualGroup(s"Abstract ${normalizedName}", abstr),
+            actualGroup(s"Concrete ${normalizedName}", concr)
+          )
+        else
+          Seq(actualGroup(name, defined))
+
+      definedWithGroup ++ List(
+        actualGroup(s"Deprecated ${normalizedName}", depDefined),
+        actualGroup(s"Inherited ${normalizedName}", inherited),
+        actualGroup(s"Deprecated and Inherited ${normalizedName}", depInherited)
       )
     }
 
-    val children =
-      all.flatMap(_._1) ++ all.flatMap(_._2) ++ all.flatMap(_._3) ++ all.flatMap(_._4)
+    val children = all.flatten.flatten
     if children.isEmpty then emptyTab
     else Tab(name, name, h2(tabAttr(name))(name) +: children, "selected")
 
@@ -363,7 +375,7 @@ class MemberRenderer(signatureRenderer: SignatureRenderer)(using DocContext) ext
           ),
           div(cls := "signature monospace")(
             annotations(m),
-            memberSingnature(m)
+            memberSignature(m)
           )
         )
 
diff --git a/scaladoc/src/dotty/tools/scaladoc/tasty/BasicSupport.scala b/scaladoc/src/dotty/tools/scaladoc/tasty/BasicSupport.scala
index 1bef73d54dbe..43d28a80606f 100644
--- a/scaladoc/src/dotty/tools/scaladoc/tasty/BasicSupport.scala
+++ b/scaladoc/src/dotty/tools/scaladoc/tasty/BasicSupport.scala
@@ -36,8 +36,8 @@ trait BasicSupport:
     def documentation = sym.docstring.map(parseComment(_, sym.tree))
 
     def source(using Quotes) =
-      val path = sym.pos.map(_.sourceFile.jpath).filter(_ != null).map(_.toAbsolutePath).map(_.toString)
-      path.map(TastyDocumentableSource(_, sym.pos.get.startLine))
+      val path = sym.pos.map(_.sourceFile.jpath).filter(_ != null).map(_.toAbsolutePath)
+      path.map(TastyMemberSource(_, sym.pos.get.startLine))
 
     def getAnnotations(): List[Annotation] =
       sym.annotations.filterNot(_.symbol.packageName.startsWith("scala.annotation.internal")).map(parseAnnotation).reverse
diff --git a/scaladoc/src/dotty/tools/scaladoc/tasty/SymOps.scala b/scaladoc/src/dotty/tools/scaladoc/tasty/SymOps.scala
index 40b8b157bdd2..178fd9656d5e 100644
--- a/scaladoc/src/dotty/tools/scaladoc/tasty/SymOps.scala
+++ b/scaladoc/src/dotty/tools/scaladoc/tasty/SymOps.scala
@@ -65,6 +65,7 @@ class SymOps[Q <: Quotes](val q: Q):
         Flags.Sealed -> Modifier.Sealed,
         Flags.Erased -> Modifier.Erased,
         Flags.Abstract -> Modifier.Abstract,
+        Flags.Deferred -> Modifier.Deferred,
         Flags.Implicit -> Modifier.Implicit,
         Flags.Inline -> Modifier.Inline,
         Flags.Lazy -> Modifier.Lazy,
diff --git a/scaladoc/src/dotty/tools/scaladoc/tasty/comments/MarkdownParser.scala b/scaladoc/src/dotty/tools/scaladoc/tasty/comments/MarkdownParser.scala
index 8ed84930c4e0..11f8c49eebe8 100644
--- a/scaladoc/src/dotty/tools/scaladoc/tasty/comments/MarkdownParser.scala
+++ b/scaladoc/src/dotty/tools/scaladoc/tasty/comments/MarkdownParser.scala
@@ -36,7 +36,7 @@ object MarkdownParser {
     ) ++ additionalExtensions
 
     new MutableDataSet()
-      .setFrom(ParserEmulationProfile.KRAMDOWN.getOptions)
+      .setFrom(ParserEmulationProfile.COMMONMARK.getOptions)
       .set(Parser.EXTENSIONS, Arrays.asList(extArray:_*))
       .set(EmojiExtension.ROOT_IMAGE_PATH,
         "https://github.global.ssl.fastly.net/images/icons/emoji/")
diff --git a/scaladoc/test/dotty/tools/scaladoc/signatures/AbstractMemberSignaturesTest.scala b/scaladoc/test/dotty/tools/scaladoc/signatures/AbstractMemberSignaturesTest.scala
new file mode 100644
index 000000000000..0d47c9ee6560
--- /dev/null
+++ b/scaladoc/test/dotty/tools/scaladoc/signatures/AbstractMemberSignaturesTest.scala
@@ -0,0 +1,42 @@
+package dotty.tools.scaladoc
+package signatures
+
+import scala.io.Source
+import scala.jdk.CollectionConverters._
+import scala.util.matching.Regex
+import dotty.tools.scaladoc.test.BuildInfo
+import java.nio.file.Path;
+import org.jsoup.Jsoup
+import util.IO
+import org.junit.Assert.assertTrue
+
+class AbstractMembers extends ScaladocTest("abstractmembersignatures"):
+
+  def runTest = {
+    afterRendering {
+      val actualSignatures = signaturesFromDocumentation()
+
+      actualSignatures.foreach { (k, v) => k match
+        case "Abstract methods" => assertTrue(v.forall(_._2 == "shouldBeAbstract"))
+        case "Concrete methods" => assertTrue(v.forall(_._2 == "shouldBeConcrete"))
+        case "Classlikes" => assertTrue(v.forall((m, n) => m.contains("abstract") == n.contains("Abstract")))
+        case _ =>
+      }
+    }
+  }
+
+  private def signaturesFromDocumentation()(using DocContext): Map[String, List[(String, String)]] =
+    val output = summon[DocContext].args.output.toPath.resolve("api")
+    val signatures = List.newBuilder[(String, (String, String))]
+    def processFile(path: Path): Unit =
+      val document = Jsoup.parse(IO.read(path))
+      val content = document.select(".documentableList").forEach { elem =>
+        val group = elem.select(".groupHeader").eachText.asScala.mkString("")
+        elem.select(".documentableElement").forEach { elem =>
+          val modifiers = elem.select(".header .other-modifiers").eachText.asScala.mkString("")
+          val name = elem.select(".header .documentableName").eachText.asScala.mkString("")
+          signatures += group -> (modifiers, name)
+        }
+      }
+    IO.foreachFileIn(output, processFile)
+    signatures.result.groupMap(_._1)(_._2)
diff --git a/scaladoc/test/dotty/tools/scaladoc/SignatureTest.scala b/scaladoc/test/dotty/tools/scaladoc/signatures/SignatureTest.scala
similarity index 99%
rename from scaladoc/test/dotty/tools/scaladoc/SignatureTest.scala
rename to scaladoc/test/dotty/tools/scaladoc/signatures/SignatureTest.scala
index 21a19f477439..05fa7164508e 100644
--- a/scaladoc/test/dotty/tools/scaladoc/SignatureTest.scala
+++ b/scaladoc/test/dotty/tools/scaladoc/signatures/SignatureTest.scala
@@ -1,4 +1,5 @@
 package dotty.tools.scaladoc
+package signatures
 
 import scala.io.Source
 import scala.jdk.CollectionConverters._
diff --git a/scaladoc/test/dotty/tools/scaladoc/SignatureTestCases.scala b/scaladoc/test/dotty/tools/scaladoc/signatures/TranslatableSignaturesTestCases.scala
similarity index 98%
rename from scaladoc/test/dotty/tools/scaladoc/SignatureTestCases.scala
rename to scaladoc/test/dotty/tools/scaladoc/signatures/TranslatableSignaturesTestCases.scala
index 4a85b191dc92..92c48dcf5b32 100644
--- a/scaladoc/test/dotty/tools/scaladoc/SignatureTestCases.scala
+++ b/scaladoc/test/dotty/tools/scaladoc/signatures/TranslatableSignaturesTestCases.scala
@@ -1,4 +1,4 @@
-package dotty.tools.scaladoc
+package dotty.tools.scaladoc.signatures
 
 class GenericSignaftures extends SignatureTest("genericSignatures", Seq("class"))