Select an object, then run the macroscript. Next, pick three source points (typically three points on the object, but that is not a requirement), followed by three target points. After picking the sixth point, a dialog will appear with some additional alignment options.

The installer that ran when you downloaded this app/plug-in from Autodesk App Store will start installing the app/plug-in. OR, simply double-click the downloaded installer to install the app/plugin.

You may need to restart the Autodesk product to activate the app/plug-in.

To uninstall this plug-in, exit the Autodesk product if you are currently running it, simply rerun the installer, and select the "Uninstall" button. OR, click Control Panel > Programs > Programs and Features (Windows 7/8.1/10) and uninstall as you would any other application from your system.

This code is released under "Quote ware" license: If you use this tool in a production environment with a group of more than two people, or have used it in the past under such conditions, then you are obliged to tell me (martin@breidt.net) about it and allow me to list that project title and your company name as a reference on my website http://scripts.breidt.net

Just a warning: If you 'invert' the alignment, the aligned object will have negative scaling which might cause problems at a later stage.