A PowerShell function that you can use to insert ToDo messages into your scripts and functions.

ToDo.ps1

<#
based on a comment from Matt Penny 

function todo {
param ([string]$TodoText)
write-host -foregroundcolor DarkYellow ” [o] Todo: $TodoText”
}

Get more from Matt at https://mattypenny.net/
#>

Function Write-ToDo {
[cmdletbinding()]

Param(
[Parameter(
Position=0,
Mandatory,
HelpMessage = "Enter a ToDo item")]
[string]$ToDo,
[Parameter(
Position = 1
)]
[ValidateNotNullorEmpty()]
#the default ToDo color
[consolecolor]$ForegroundColor = "Cyan"
)

Begin {
    If (-Not $ToDoHistory) {
        $global:ToDoHistory = @()
    }
 } #begin

Process {
    #check ToDoHistory to make sure we haven't already displayed the item
    #useful if the new function accepts pipeline input or when looping
    if (-Not ($global:ToDoHistory -contains $ToDo)) {
        $global:ToDoCounter++
        #format the counter with 2 leading zeros
        $msg = "[$($global:ToDoCounter.ToString("00#"))] TO-DO: $ToDo"

        Write-Host $msg -ForegroundColor $ForegroundColor
        $global:TodoHistory+=$ToDo
    }
    
 } #process

End {
    #not used
 } #end

} #Write-ToDo

Set-Alias -Name ToDo -Value Write-ToDo

Function Remove-ToDoVariable {
[cmdletbinding(SupportsShouldProcess)]
Param()

"ToDoCounter","ToDoHistory" | foreach {
  #remove these variables from the global scope and ignore any errors
  #for variables that don't exist
  Remove-Variable -Name $_ -Scope global -ErrorAction SilentlyContinue
}

} #Remove-ToDoVariable

These tools are described at http://jdhitsolutions.com/blog/powershell/5242/another-powershell-todo-tool/

This functionality is now part of the PSScriptTools module https://github.com/jdhitsolutions/PSScriptTools