diff --git a/Scripts/convert-image2ascii.ps1 b/Scripts/convert-image2ascii.ps1
index d3140b7d..1eafe44f 100644
--- a/Scripts/convert-image2ascii.ps1
+++ b/Scripts/convert-image2ascii.ps1
@@ -1,16 +1,16 @@
 <#
- .SYNOPSIS
-    Convert-ImageToAscii
- .DESCRIPTION
-    Converts an image to ASCII art.
- .EXAMPLE
-    Convert-ImageToAscii -InFile "C:\Folder\Image.jpg" -Width 32 -Height 32
- .INPUTS
- .OUTPUTS
- .NOTES
-    Author: Fxbyy
- .FUNCTIONALITY
-    Converts an image to ASCII art.
+.SYNOPSIS
+	Converts images to ASCII art
+.DESCRIPTION
+	This PowerShell script converts an image to ASCII art.
+.EXAMPLE
+	Convert-ImageToAscii -InFile "C:\Folder\Image.jpg" -Width 32 -Height 32
+.INPUTS
+.OUTPUTS
+.NOTES
+	Author: Fxbyy
+.FUNCTIONALITY
+	Converts an image to ASCII art.
  #>
  
  function Convert-ImageToAscii {
diff --git a/Scripts/install-audacity.ps1 b/Scripts/install-audacity.ps1
index 34b7ea70..b26c3925 100755
--- a/Scripts/install-audacity.ps1
+++ b/Scripts/install-audacity.ps1
@@ -1,4 +1,4 @@
-<#
+<#
 .SYNOPSIS
 	Installs Audacity
 .DESCRIPTION
diff --git a/Scripts/install-powershell.ps1 b/Scripts/install-powershell.ps1
index e7b45cd8..173c9abf 100644
--- a/Scripts/install-powershell.ps1
+++ b/Scripts/install-powershell.ps1
@@ -1,6 +1,4 @@
-# Copyright (c) Microsoft Corporation.
-# Licensed under the MIT License.
-<#
+<#
 .Synopsis
     Install PowerShell on Windows, Linux or macOS.
 .DESCRIPTION
@@ -520,4 +518,5 @@ try {
     [Net.ServicePointManager]::SecurityProtocol = $originalValue
 
     Remove-Item -Path $tempDir -Recurse -Force -ErrorAction SilentlyContinue
+	exit 0 # success
 }
diff --git a/Scripts/install-thunderbird.ps1 b/Scripts/install-thunderbird.ps1
index f4bf3c4e..2e7f6b39 100755
--- a/Scripts/install-thunderbird.ps1
+++ b/Scripts/install-thunderbird.ps1
@@ -1,4 +1,4 @@
-<#
+<#
 .SYNOPSIS
 	Installs Thunderbird
 .DESCRIPTION
diff --git a/Scripts/install-twitter.ps1 b/Scripts/install-twitter.ps1
index 72c9e15e..6f643b0d 100755
--- a/Scripts/install-twitter.ps1
+++ b/Scripts/install-twitter.ps1
@@ -1,4 +1,4 @@
-<#
+<#
 .SYNOPSIS
 	Installs Twitter
 .DESCRIPTION
diff --git a/Scripts/install-visual-studio-code.ps1 b/Scripts/install-visual-studio-code.ps1
index faad8219..9649cdb9 100755
--- a/Scripts/install-visual-studio-code.ps1
+++ b/Scripts/install-visual-studio-code.ps1
@@ -1,4 +1,4 @@
-<#
+<#
 .SYNOPSIS
 	Installs Visual Studio Code
 .DESCRIPTION
diff --git a/Scripts/list-pi.ps1 b/Scripts/list-pi.ps1
index 32139089..88c5d56f 100644
--- a/Scripts/list-pi.ps1
+++ b/Scripts/list-pi.ps1
@@ -69,6 +69,6 @@ try {
 	List-Pi $Digits
 	exit 0 # success
 } catch {
-        "⚠️ Error in line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"
-        exit 1
+	"⚠️ Error in line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"
+	exit 1
 }
\ No newline at end of file
diff --git a/Scripts/list-system-info.ps1 b/Scripts/list-system-info.ps1
index 17515454..5efcbbb8 100755
--- a/Scripts/list-system-info.ps1
+++ b/Scripts/list-system-info.ps1
@@ -105,4 +105,4 @@ $info = $info | ConvertTo-JSON
 
 # Output 
 $info
-exit 0 # success
+exit 0 # success
\ No newline at end of file
diff --git a/Scripts/pick-commit.ps1 b/Scripts/pick-commit.ps1
index 5e10d61d..2d4e9f79 100755
--- a/Scripts/pick-commit.ps1
+++ b/Scripts/pick-commit.ps1
@@ -23,8 +23,8 @@
 param([string]$CommitID = "", [string]$CommitMessage = "", [string]$Branches = "", [string]$RepoDir = "$PWD")
 
 try {
-	if (-not(test-path "$RepoDir" -pathType container)) { throw "Can't access directory: $RepoDir" }
-	set-location "$RepoDir"
+	if (-not(Test-Path "$RepoDir" -pathType container)) { throw "Can't access directory: $RepoDir" }
+	Set-Location "$RepoDir"
 
 	if ($CommitID -eq "") { $CommitID = read-host "Enter the Git commit id to cherry-pick" }
 	if ($CommitMessage -eq "") { $CommitMessage = read-host "Enter the commit message to use" }
@@ -78,4 +78,4 @@ try {
 } catch {
 	"⚠️ Error in line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"
 	exit 1
-}
+}
\ No newline at end of file
diff --git a/Scripts/play-happy-birthday.ps1 b/Scripts/play-happy-birthday.ps1
index 05f87361..3069e45c 100755
--- a/Scripts/play-happy-birthday.ps1
+++ b/Scripts/play-happy-birthday.ps1
@@ -1,12 +1,12 @@
 <#
 .SYNOPSIS
-        Plays the Happy Birthday song
+	Plays the Happy Birthday song
 .DESCRIPTION
-        This PowerShell script plays the famous Happy Birthday song.
+	This PowerShell script plays the famous Happy Birthday song.
 .EXAMPLE
-        PS> ./play-happy-birthday
+	PS> ./play-happy-birthday
 .LINK
-        https://github.com/fleschutz/PowerShell
+	https://github.com/fleschutz/PowerShell
 .NOTES
 	Author: Markus Fleschutz | License: CC0
 #>
diff --git a/Scripts/play-tetris-melody.ps1 b/Scripts/play-tetris-melody.ps1
index 71d7ac5e..d984ef90 100755
--- a/Scripts/play-tetris-melody.ps1
+++ b/Scripts/play-tetris-melody.ps1
@@ -1,12 +1,12 @@
 <#
 .SYNOPSIS
-        Plays the Tetris melody
+	Plays the Tetris melody
 .DESCRIPTION
-        This PowerShell script plays the Tetris melody.
+	This PowerShell script plays the Tetris melody.
 .EXAMPLE
-        PS> ./play-tetris-melody
+	PS> ./play-tetris-melody
 .LINK
-        https://github.com/fleschutz/PowerShell
+	https://github.com/fleschutz/PowerShell
 .NOTES
 	Author: Markus Fleschutz | License: CC0
 #>
diff --git a/Scripts/show-notification.ps1 b/Scripts/show-notification.ps1
index c6ce9c6e..12b6e9a0 100755
--- a/Scripts/show-notification.ps1
+++ b/Scripts/show-notification.ps1
@@ -1,14 +1,14 @@
 <#
 .SYNOPSIS
-        Shows a notification
+	Shows a notification
 .DESCRIPTION
-        This PowerShell script shows a toast-message notification for the Windows 10 Notification Center.
+	This PowerShell script shows a toast-message notification for the Windows 10 Notification Center.
 .EXAMPLE
-        PS> ./show-notification "Hello World"
+	PS> ./show-notification "Hello World"
 .LINK
-        https://github.com/fleschutz/PowerShell
+	https://github.com/fleschutz/PowerShell
 .NOTES
-        Author: Markus Fleschutz | License: CC0
+	Author: Markus Fleschutz | License: CC0
 #>
 
 param([string]$Text = "Hello World", [string]$Title = "NOTE", [int]$Duration = 5000)
@@ -27,4 +27,4 @@ try {
 } catch {
 	"⚠️ Error in line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"
 	exit 1
-}
+}
\ No newline at end of file
diff --git a/Scripts/speak-epub.ps1 b/Scripts/speak-epub.ps1
index cf041dba..e97019b8 100755
--- a/Scripts/speak-epub.ps1
+++ b/Scripts/speak-epub.ps1
@@ -1,6 +1,6 @@
 <#
 .SYNOPSIS
-	Speaks the content of the given Epub file by text-to-speech (TTS).
+	Speaks an Epub file by text-to-speech (TTS).
 .DESCRIPTION
 	This PowerShell script speaks the content of the given Epub file by text-to-speech (TTS).
 .PARAMETER Filename
@@ -55,7 +55,7 @@ function UnzipFile() { param([string]$file, [string]$dest)
 }
  
 if ($Filename -eq "") {
-	$Filename = read-host "Enter path to .epub file"
+	$Filename = Read-Host "Enter path to .epub file"
 }
 write-output "Reading $Filename ..."
 $file = get-item $Filename
@@ -94,3 +94,4 @@ foreach($item in $content.package.manifest.Item) {
 		}
 	}
 }
+exit 0 # success
\ No newline at end of file
diff --git a/Scripts/turn-volume-fully-up.ps1 b/Scripts/turn-volume-fully-up.ps1
index 5ae2c94e..99509325 100755
--- a/Scripts/turn-volume-fully-up.ps1
+++ b/Scripts/turn-volume-fully-up.ps1
@@ -1,4 +1,4 @@
-<#
+<#
 .SYNOPSIS
 	Turns audio volume fully up
 .DESCRIPTION
diff --git a/Scripts/uninstall-vlc.ps1 b/Scripts/uninstall-vlc.ps1
index 50a6cf53..4379cdb9 100755
--- a/Scripts/uninstall-vlc.ps1
+++ b/Scripts/uninstall-vlc.ps1
@@ -1,4 +1,4 @@
-<#
+<#
 .SYNOPSIS
 	Uninstalls VLC
 .DESCRIPTION
diff --git a/Scripts/uninstall-windows-terminal.ps1 b/Scripts/uninstall-windows-terminal.ps1
index 1ccfb43c..aafcdb3b 100755
--- a/Scripts/uninstall-windows-terminal.ps1
+++ b/Scripts/uninstall-windows-terminal.ps1
@@ -1,4 +1,4 @@
-<#
+<#
 .SYNOPSIS
 	Uninstalls Windows Terminal
 .DESCRIPTION
diff --git a/Scripts/upload-to-dropbox.ps1 b/Scripts/upload-to-dropbox.ps1
index c8a07529..caf0eddc 100755
--- a/Scripts/upload-to-dropbox.ps1
+++ b/Scripts/upload-to-dropbox.ps1
@@ -1,4 +1,4 @@
-<#
+<#
 .SYNOPSIS
 	Uploads a file to Dropbox
 .DESCRIPTION
diff --git a/Scripts/write-fractal.ps1 b/Scripts/write-fractal.ps1
index 14283b0b..73eaf489 100644
--- a/Scripts/write-fractal.ps1
+++ b/Scripts/write-fractal.ps1
@@ -1,4 +1,4 @@
-<#
+<#
 .SYNOPSIS
         Writes a fractal
 .DESCRIPTION
diff --git a/Scripts/write-matrix.ps1 b/Scripts/write-matrix.ps1
index 9ad9c690..b444372e 100644
--- a/Scripts/write-matrix.ps1
+++ b/Scripts/write-matrix.ps1
@@ -1,4 +1,4 @@
-<#
+<#
 .SYNOPSIS
         Writes the matrix
 .DESCRIPTION
diff --git a/Scripts/write-sine-curves.ps1 b/Scripts/write-sine-curves.ps1
index 39d02580..001110d2 100644
--- a/Scripts/write-sine-curves.ps1
+++ b/Scripts/write-sine-curves.ps1
@@ -1,4 +1,4 @@
-<#
+<#
 .SYNOPSIS
         Write sine curves
 .DESCRIPTION