Hi Hanspeter,Yes, if in the Document Properties sheet, Grid tab, you set "No of Snaps" to 10, you will get 10 snap points per grid unit. It works exactly as you would expect.
Have you set No of Snaps in both X and Y? Did you click on OK to apply the new No of Snaps value?
Note that values set in the Document Properties sheet are a Document-level setting and apply only to the current document. If you start a new document, its settings will be the defaults defined in the template on which it is based.
Re: AutoCAD, yes you simply Save As with DWG as your Flile Type. To open a DWG simply select File | Open.
Since the DWG format does not support Attributes, all Attribute information will be lost when you save as DWG.