diff --git a/BetterThanRacket.fs b/BetterThanRacket.fs
old mode 100755
new mode 100644
diff --git a/FSharpTest.fsproj b/FSharpTest.fsproj
old mode 100755
new mode 100644
diff --git a/FSharpTest.sln b/FSharpTest.sln
old mode 100755
new mode 100644
index a3490cc..b61b5ca
--- a/FSharpTest.sln
+++ b/FSharpTest.sln
@@ -1,17 +1,17 @@
-
-Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio 15
-Project("{f2a71f9b-5d33-465a-a702-920d77279786}") = "FSharpTest", "FSharpTest.fsproj", "{5F2677D3-E1C3-4C0C-9184-7F9C5838DEF2}"
-EndProject
-Global
-	GlobalSection(SolutionConfigurationPlatforms) = preSolution
-		Debug|Any CPU = Debug|Any CPU
-		Release|Any CPU = Release|Any CPU
-	EndGlobalSection
-	GlobalSection(ProjectConfigurationPlatforms) = postSolution
-		{5F2677D3-E1C3-4C0C-9184-7F9C5838DEF2}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{5F2677D3-E1C3-4C0C-9184-7F9C5838DEF2}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{5F2677D3-E1C3-4C0C-9184-7F9C5838DEF2}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{5F2677D3-E1C3-4C0C-9184-7F9C5838DEF2}.Release|Any CPU.Build.0 = Release|Any CPU
-	EndGlobalSection
-EndGlobal
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 15
+Project("{f2a71f9b-5d33-465a-a702-920d77279786}") = "FSharpTest", "FSharpTest.fsproj", "{5F2677D3-E1C3-4C0C-9184-7F9C5838DEF2}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{5F2677D3-E1C3-4C0C-9184-7F9C5838DEF2}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{5F2677D3-E1C3-4C0C-9184-7F9C5838DEF2}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{5F2677D3-E1C3-4C0C-9184-7F9C5838DEF2}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{5F2677D3-E1C3-4C0C-9184-7F9C5838DEF2}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+EndGlobal
diff --git a/OtherFile.fs b/OtherFile.fs
old mode 100755
new mode 100644
index 7d6e93c..b05669e
--- a/OtherFile.fs
+++ b/OtherFile.fs
@@ -1,4 +1,4 @@
-namespace SomeNamespace
-
-module SomeModule = 
+namespace SomeNamespace
+
+module SomeModule = 
     let theAnswer = 42
\ No newline at end of file
diff --git a/Program.fs b/Program.fs
old mode 100755
new mode 100644
index 2f2acc9..f7bbf84
--- a/Program.fs
+++ b/Program.fs
@@ -1,109 +1,109 @@
-// Learn more about F# at http://fsharp.org
-
-open System
-
-open SomeNamespace.SomeModule
-
-open BetterThanRacket
-
-open System.Numerics
-open System.Collections.Generic
-
-//open System.Windows.Forms
-
-(* let rec fib n =
-    if n = 0 then 0
-    else if n = 1 then 1
-    else fib(n-2) + fib(n-1) *)
-
-
-(*
-let rec fib n =
-    match n with
-    | 0 -> 0
-    | 1 -> 1
-    | _ -> fib(n-2) + fib(n-1)
-*)
-
-
-(* let rec fib n =
-    match n with
-    | 0 | 1 -> n
-    | _ -> fib(n-2) + fib (n-1) *)
-
-
-(*
-let rec factorial n =
-    if n = 0 then 1
-    else n * factorial(n-1)
-*)
-
-(*
-let rec factorial n =
-    match n with
-    | 0 -> 1
-    | _ -> n * factorial(n-1)
-*)
-
-type Student = {
-    LastName : string
-    FirstName : string
-    EnrollmentNumber : int
-    Fee:int
-}
-
-(*
-let sumOfStudentFees stud = 
-    stud
-    // You don't even need to filter all students because they are
-    // automatically students
-    |> List.map (fun x -> x.Fee)
-    |> List.fold (fun x y -> x + y) 0
-*)
-
-(*
-let sumOfStudentFees stud = 
-    stud
-    // You don't even need to filter all students because they are
-    // automatically students
-    |> List.map (fun x -> x.Fee)
-    |> List.fold (( + )) 0
-*)
-
-(*let sumOfStudentFees stud = 
-    List.sumBy (fun x -> x.Fee) stud
-*)
-[<EntryPoint>]
-let main argv =
-    (*let result = fib 10
-    printfn "%d" result
-
-    let myList = [1;4;5;3;2]
-    List.map (fun x -> printfn "%d" x) myList |> ignore*)
-
-    (*let marcus = { LastName = "Müller"; FirstName = "Marcus"; EnrollmentNumber = 0; Fee = 100 }
-    let marc = { LastName = "Müller"; FirstName = "Marc"; EnrollmentNumber = 0; Fee = 100 }
-
-    let listOfStudents = [ marc; marcus ]
-
-    printfn "%d" (sumOfStudentFees(listOfStudents))*)
-
-    let num = new BigInteger(122231)
-
-    let myList = [1;3;4;6;7]
-
-    myList
-    |> List.map ((+) 5)
-    |> printfn "%A"
-
-    num.ToString()
-    |> printfn "%s"
-
-    printfn "%d" theAnswer
-
-    printfn "%b" (BetterThanRacket.BinaryTreeHausübung.BinaryTreeContains 56 BinaryTreeHausübung.smallTree)
-
-    printfn "%A" (Euklid.euklid 128 36)
-    printfn "%A" (Euklid.erwEuklid 128 36)
-
-    0 // return an integer exit code
+// Learn more about F# at http://fsharp.org
+
+open System
+
+open SomeNamespace.SomeModule
+
+open BetterThanRacket
+
+open System.Numerics
+open System.Collections.Generic
+
+//open System.Windows.Forms
+
+(* let rec fib n =
+    if n = 0 then 0
+    else if n = 1 then 1
+    else fib(n-2) + fib(n-1) *)
+
+
+(*
+let rec fib n =
+    match n with
+    | 0 -> 0
+    | 1 -> 1
+    | _ -> fib(n-2) + fib(n-1)
+*)
+
+
+(* let rec fib n =
+    match n with
+    | 0 | 1 -> n
+    | _ -> fib(n-2) + fib (n-1) *)
+
+
+(*
+let rec factorial n =
+    if n = 0 then 1
+    else n * factorial(n-1)
+*)
+
+(*
+let rec factorial n =
+    match n with
+    | 0 -> 1
+    | _ -> n * factorial(n-1)
+*)
+
+type Student = {
+    LastName : string
+    FirstName : string
+    EnrollmentNumber : int
+    Fee:int
+}
+
+(*
+let sumOfStudentFees stud = 
+    stud
+    // You don't even need to filter all students because they are
+    // automatically students
+    |> List.map (fun x -> x.Fee)
+    |> List.fold (fun x y -> x + y) 0
+*)
+
+(*
+let sumOfStudentFees stud = 
+    stud
+    // You don't even need to filter all students because they are
+    // automatically students
+    |> List.map (fun x -> x.Fee)
+    |> List.fold (( + )) 0
+*)
+
+(*let sumOfStudentFees stud = 
+    List.sumBy (fun x -> x.Fee) stud
+*)
+[<EntryPoint>]
+let main argv =
+    (*let result = fib 10
+    printfn "%d" result
+
+    let myList = [1;4;5;3;2]
+    List.map (fun x -> printfn "%d" x) myList |> ignore*)
+
+    (*let marcus = { LastName = "Müller"; FirstName = "Marcus"; EnrollmentNumber = 0; Fee = 100 }
+    let marc = { LastName = "Müller"; FirstName = "Marc"; EnrollmentNumber = 0; Fee = 100 }
+
+    let listOfStudents = [ marc; marcus ]
+
+    printfn "%d" (sumOfStudentFees(listOfStudents))*)
+
+    let num = new BigInteger(122231)
+
+    let myList = [1;3;4;6;7]
+
+    myList
+    |> List.map ((+) 5)
+    |> printfn "%A"
+
+    num.ToString()
+    |> printfn "%s"
+
+    printfn "%d" theAnswer
+
+    printfn "%b" (BetterThanRacket.BinaryTreeHausübung.BinaryTreeContains 56 BinaryTreeHausübung.smallTree)
+
+    printfn "%A" (Euklid.euklid 128 36)
+    printfn "%A" (Euklid.erwEuklid 128 36)
+
+    0 // return an integer exit code
diff --git a/asdf.fs b/asdf.fs
old mode 100755
new mode 100644