PowerShell; Use Get-Member to Self Document Nested COM Object

Question

Anyone know how to use Get-Member to Recursively dump to a text file The entire properties|methods tree of a COM object? (The Output formatting of Get-Object is fine)

Instead of giving me only the top level as in this example;

New-Object -com AutoItX3.Control | Get-Member

I need it to recurse the entire object to return results. If This is not possible, how would I dump the methods/properties of a sub object?

My objective is simply to generate documentation for various COM objects that I need to use which have little or no documentation. I'm open to suggestions of software that parse COM Objets or other languages etc.