Change Case

if you're familiar with PowerShell you could use the following scripts.

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Details

# Get clipboard text
$input = Get-Clipboard
# Convert to title case, preserving symbols and punctuation
$titleCase = ($input -split '(\W+)') | ForEach-Object {
    if ($_ -match '^\w+$') {
        $_.Substring(0,1).ToUpper() + $_.Substring(1).ToLower()
    } else {
        $_  # Preserve symbols/spaces as-is
    }
}
# Join and send to clipboard
Set-Clipboard -Value ($titleCase -join '')

Copy

This will change the case of any text string on the clipboard to Title case.
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The following will change the clipboard text to UPPER CASE.

$text = Get-Clipboard
$text.ToUpper() | Set-Clipboard
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This will strip out any CRLF text content to put all the text on one line.

Details

Add-Type -AssemblyName System.Windows.Forms
[Console]::OutputEncoding = [System.Text.Encoding]::UTF8

function Get-PreferredText {
    $dataObj = [Windows.Forms.Clipboard]::GetDataObject()
    foreach ($format in @("UnicodeText", "Text", "System.String")) {
        if ($dataObj.GetDataPresent($format)) {
            $text = $dataObj.GetData($format)
            if ($text -is [string] -and $text.Trim().Length -gt 0) {
                return $text
            }
        }
    }
    return $null
}

function Get-HTMLFragment {
    $dataObj = [Windows.Forms.Clipboard]::GetDataObject()
    if ($dataObj.GetDataPresent("HTML Format")) {
        $html = $dataObj.GetData("HTML Format")
        if ($html -is [string]) {
            $start = $html.IndexOf("StartFragment:")
            $end = $html.IndexOf("EndFragment:")
            if ($start -ge 0 -and $end -gt $start) {
                $startOffset = [int]($html.Substring($start + 14, 10).Trim())
                $endOffset = [int]($html.Substring($end + 12, 10).Trim())
                return $html.Substring($startOffset, $endOffset - $startOffset)
            }
        }
    }
    return $null
}

function FlattenText($text) {
    $text -replace '<[^>]+>', '' -replace ' ', ' ' '
          -replace "(\r\n|\n|\r)", " " -replace "\s{2,}", " " '
          | ForEach-Object { $_.Trim() }
}

# Main logic
$rawText = Get-PreferredText
if (-not $rawText) {
    $rawText = Get-HTMLFragment
}

if (-not $rawText) {
    Write-Host "'n? No usable clipboard content found."
} else {
    $flattened = FlattenText $rawText
    Write-Host "'n?? Flattened Text:"
    Write-Host $flattened
    Set-Clipboard -Value $flattened
    Write-Host "'n? Clipboard updated."
}

Read-Host "'nPress Enter to exit"
Copy

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Gary you could just use

(Get-Culture).TextInfo.ToTitleCase

PS> $words = 'wAr aNd pEaCe'
PS> $TextInfo = (Get-Culture).TextInfo
PS> $TextInfo.ToTitleCase($words)
War And Peace

Alex Thanks Alex.  I'm still learning PowerShell with tremendous hand holding help from CoPilot.   CoPilot helped convert my old DOS Batch files to PS! scripts along with the code shown above.

If there's anything you'd like me to cover in the PowerShell TechHelps let me know.