function Show-CommandDefinition {
<#
.SYNOPSIS
    Writes to screen the definition for a cmdlet, function, etc.

.PARAMETER Command
    [string] Mandatory. Specifies what command's definition will be written.

.PARAMETER Clipboard
    [switch] Optional. If used, also copy command information to clipboard.

.PARAMETER Detail
    [switch] Optional. If used, provides additional info about command.
#>
    [CmdletBinding()]
    [OutputType([string[]])]
    param (
        [Parameter(Mandatory = $true)]
        [ValidateNotNullOrEmpty()]
        [ValidateCount(1,1)]
        [ValidatePattern('[A-Za-z0-9\-\.\s\\:]')]
        [string[]]$Command,
        [Parameter(Mandatory = $false)]
        [switch]$Clipboard,
        [Parameter(Mandatory = $false)]
        [switch]$Detail
    )


    $fullOutput="" # Full output
    $outputHeader="" # Command details
    $outputBody="" # Command text

    # A basic check to make sure we're not getting more than one command somehow.
    if ( (get-command $Command -ErrorAction SilentlyContinue).count -gt 1 ) {
        # Passed in a wildcard or otherwise returning multiple commands. This will not work.
        Write-Error "Error: This cmdlet only accepts single command arguments with no wildcards."
    } else {
        try {
            $WarningPreference="SilentlyContinue"
            # Get all command info
            $commandInfo=(Get-Command $Command)

            # Get the specific command info for header and command content
            $outputHeader+="Command Name: $($commandInfo.Name)`n"
            $outputHeader+="Command Type: $($commandInfo.CommandType)`n"
            if ( $commandInfo.CommandType -eq "Alias" ) {
                # Do other weird stuff
                $outputHeader+="Resolved Command: $($commandInfo.ResolvedCommand)`n"
                # Reset $commandInfo values to resolved command info
                $commandInfo=(Get-Command $commandInfo.ResolvedCommand)
                $outputHeader+="Command Source: $($commandInfo.Source)`n"
                $outputHeader+="Version: $($commandInfo.Version)`n"
                # Get the alias's command definition
                $outputBody=$commandInfo.Definition
                $fullOutput=$outputHeader,$outputBody
            } elseif ( $commandInfo.CommandType -eq "ExternalScript" -or $commandInfo.CommandType -eq "Application" ) {
                $outputHeader+="Command Path: $($commandInfo.Path)`n"
                # Get the script/app definition
                $outputBody=$commandInfo.Definition
                if ( $commandInfo.CommandType -eq "Application" ) {
                    $outputHeader+="Product Name: $($commandInfo.FileVersionInfo.ProductName)`n"
                    $outputHeader+="Version: $($commandInfo.Version)`n"
                    $fullOutput=$outputHeader
                } else {
                    $fullOutput=$outputHeader,$outputBody
                }
            } elseif ( $commandInfo.CommandType -eq "Function" -or $commandInfo.CommandType -eq "Cmdlet" ) {
                $outputHeader+="Command Source: $($commandInfo.Source)`n"
                $outputHeader+="Version: $($commandInfo.Version)`n"
                # Get function/cmdlet definition
                $outputBody=$commandInfo.Definition
                $fullOutput=$outputHeader,$outputBody
            } else {
                # It's some other thing, a Filter, workflow, something.
                if ( $null -ne $commandInfo.Path ) {
                    $outputHeader+="Command Path: $($commandInfo.Path)`n"
                }
                if ( $null -ne $commandInfo.Source) {
                    $outputHeader+="Command Source: $($commandInfo.Source)`n"
                }
                if ( $null -ne $commandInfo.Version ) {
                    $outputHeader+="Command Version: $($commandInfo.Version)`n"
                }
                # Get the definition
                $outputBody=$commandInfo.Definition
                $fullOutput=$outputHeader,$outputBody
            }

            if ( $Clipboard ) {
                # Clear the clipboard, output info to clipboard
                $null | Set-Clipboard
    
                if ( $Detail ) {
                    $fullOutput | Set-Clipboard
                    $fullOutput
                } else {
                    $outputBody | Set-Clipboard
                    $outputBody
                }
            } else {
                # Just write to screen
                if ( $Detail ) {
                    $fullOutput
                } else {
                    $outputBody
                }
            }
        } catch {
            Write-Error "Error getting command definition: $($_.exception.message)"
        } finally {
            $WarningPreference="Continue"
        }
    }
}