diff --git a/build.fsx b/build.fsx
index 2296da58..7140bb1a 100644
--- a/build.fsx
+++ b/build.fsx
@@ -14,12 +14,17 @@ Environment.CurrentDirectory <- __SOURCE_DIRECTORY__
 
 // PREPARE
 
+Target "Start" DoNothing
 Target "Clean" (fun _ -> CleanDirs ["out"; "obj"; "temp"])
 Target "RestorePackages" RestorePackages
 Target "AssemblyInfo" DoNothing
 Target "Prepare" DoNothing
 
-"Clean" ==> "RestorePackages" ==> "AssemblyInfo" ==> "Prepare"
+"Start"
+  =?> ("Clean", not (hasBuildParam "incremental"))
+  ==> "RestorePackages"
+  ==> "AssemblyInfo"
+  ==> "Prepare"
 
 
 // BUILD
@@ -52,6 +57,8 @@ Target "Test" (fun _ ->
 
 // DOCUMENTATION
 
+Target "CleanDocs" (fun _ -> CleanDirs ["out" @@ "docs"])
+
 Target "Docs" (fun _ ->
     executeFSIWithArgs "docs/tools" "build-docs.fsx" ["--define:RELEASE"] [] |> ignore
 )
diff --git a/docs/tools/build-docs.fsx b/docs/tools/build-docs.fsx
index a9c523ba..bc603bda 100644
--- a/docs/tools/build-docs.fsx
+++ b/docs/tools/build-docs.fsx
@@ -83,7 +83,7 @@ let buildDocumentation () =
     let sub = if dir.Length > content.Length then dir.Substring(content.Length + 1) else "."
     Literate.ProcessDirectory
       ( dir, docTemplate, output @@ sub, replacements = ("root", root)::info,
-        layoutRoots = layoutRoots )
+        layoutRoots = layoutRoots, references=false, lineNumbers=true )
 
 // Generate
 copyFiles()