diff --git a/src/Bif/Bif.fsproj b/src/Bif/Bif.fsproj
new file mode 100644
index 0000000..b6d18c5
--- /dev/null
+++ b/src/Bif/Bif.fsproj
@@ -0,0 +1,16 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net10.0</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <Compile Include="Program.fs" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\FibLib\FibLib.fsproj" />
+  </ItemGroup>
+
+</Project>
diff --git a/src/Bif/Program.fs b/src/Bif/Program.fs
new file mode 100644
index 0000000..3e108fb
--- /dev/null
+++ b/src/Bif/Program.fs
@@ -0,0 +1,82 @@
+open System.Net
+open System.IO
+open Fibble.FibLib
+open Fibble.FibLib.Ast // Ger oss tillgång till Element, Text, RawHtml etc.
+open Fibble.FibLib.Pandoc
+open Fibble.FibLib.Utils
+
+// ==========================================
+// 1. Prelude (Dina egna taggar)
+// ==========================================
+
+
+let myPrelude : Map<string, TagRenderer> =
+    Map [
+        "quotient", fun _ args _ ->
+            match args with
+            | [_, one; _, two] -> 
+                Text (sprintf "%d" (int one / int two))
+            | _ ->
+                Text "[Fel: quotient kräver två argument]"
+        "bold", fun _ args children -> 
+            Element("b", args, children)
+        "image", positional (fun _ args _ -> Element("img", [("src", args[0])], []))
+        "value", positional (fun meta args _ ->
+                             match Map.tryFind args.Head meta with
+                             | Some(v) -> Text v
+                             | None -> Text $"value {args.Head} not found in metadata")
+        "link", positional (fun _ args children ->
+            let url = if args.Length > 0 then args.[0].Trim '"' else "#"
+            Element("a", [("href", args.Head)], children))
+              
+        // @br har varken argument eller barn, så vi returnerar bara rå HTML direkt
+        "br", nameToElement "br"
+        "table", fun _ _ children -> Text "hej"
+        "md", fun meta args children -> RawHtml (mdToHtml (stringifyNodes children))
+        ]
+
+// ==========================================
+// 2. Mall och Evaluator
+// ==========================================
+//
+module File =
+    let readFile path =
+        match Path.Exists(path) with
+            | true -> File.ReadAllText(path)
+            | _ -> failwith $"{path} does not exist"
+
+let pageTemplate = File.readFile "_page-template"
+
+let sourceCode = File.readFile "document.fib"
+// ==========================================
+// 3. Huvudpipeline
+// ==========================================
+let processDocument (source: string) =
+    let evaluator = Evaluators.FsiEvaluator()
+    
+    // Steg 1: Parsa koden
+    let metadata, rawBlocks = Parser.parse source
+    
+
+    // Steg 2: Transformera och exekvera trädet
+    let evaluatedBlocks = 
+        rawBlocks |> List.map (function
+            | Paragraph children -> 
+                Paragraph (children 
+                           |> List.map (Execution.transform metadata myPrelude evaluator))
+            | Section(l, a, children) -> 
+                Section(l, a, children
+                              |> List.map (Execution.transform metadata myPrelude evaluator))
+        )
+
+    // Steg 3: Be printern skriva ut trädet till HTML
+    let bodyHtml = HtmlPrinter.render (metadata, evaluatedBlocks)
+
+    // Steg 4: Fyll i din HTML-mall
+    let mutable finalHtml = pageTemplate.Replace("{{body}}", bodyHtml)
+    
+    finalHtml
+
+// Kör programmet
+let output = processDocument sourceCode
+printfn "%s" output
diff --git a/src/Bif/document.fib b/src/Bif/document.fib
new file mode 100644
index 0000000..923d706
--- /dev/null
+++ b/src/Bif/document.fib
@@ -0,0 +1,39 @@
+---
+author: bajs
+date: yesterday
+title: FSI Test
+---
+
+@section{Definitioner}
+Vi definierar en funktion och en variabel.
+@"""
+let globalCounter = ref 0
+
+let increment () =
+    globalCounter.Value <- globalCounter.Value + 1
+    sprintf "Räknaren är nu %d" globalCounter.Value
+"""
+@(1)
+
+@link[www.google.com]{hejsan hoppsan fallerallera}
+
+Detta är en paragraf som har lite text i sig och lite @md{inbäddad *markdown* som kanske} funkar. Det är bra så.
+
+@md{
+en tabell
+
+hej    hopp
+---    ----
+abc    defg
+bde    dddd
+ueo    eoau
+ueo    aoeu
+}
+
+elleR?
+
+@section{Användning}
+Första anropet: @(increment())
+Andra anropet: @(increment())
+
+Test av utskrift: @value[date]