Как дополнять переменную текстом, чтобы потом получить текст полностью?

VARIABLES AND SCOPE
By default, variables are available only in the scope in which they are created.

For example, a variable that you create in a function is available only within the function. A variable that you create in a script is available only within the script (unless you dot-source the script, which adds it to the current scope).

You can use a scope modifier to change the default scope of the variable. The following expression creates a variable named "Computers". The variable has a global scope, even when it is created in a script or function.

$global:computers = "Server01"For more information, see about_Scopes.

function funct1 {
    $Msg ="hello"
    $Msg +="friends!"
	return $Msg
}

function funct2 {
        $Msg += "how are you?"
		return $Msg
}

funct1
funct2
Write-Host $Msg