>>Hi everybody,
>>
>>Ok, I have to admit, that I either never done it or did it a long time ago and forgot the basics. I'm trying to create an Invoice document. Actually, I have a template, but it is currently static, e.g. I just type hours and the sum. This sounds stupid to me, so I want to do it right. E.g. I want to be able to type hours I've worked, have Total hours computed and the Total Due computed as well. How should I go about it:
>>step by step instructions?
>>
>>Could somebody please guide me?
>>
>>Thanks a lot in advance and apologize for this simple question.
>
>I don't remember all the details now; some calculations can be done when you are in a table. Cell references are fixed, and don't adjust automatically, as in Excel.
>
>Another way is to use bookmarks. A bookmark can span a selection, not only an insertion point; and there are formulae ("fields") which can make use of the contents of a bookmark - the actual text that would be selected if you go to the bookmark.

Ok, I've done it. Took me a while to figure this out and I'm not yet confident, but at least the simple invoice works now.