This is a follow-on from bug 63001 which was resolved invalid due to containing multiple issues. I am splitting them up into individual bugs as the requests seem reasonable and contained a good example. Related Ask thread:

http://ask.libreoffice.org/en/question/1119/

Quoting from the original report:

> ... often the print out of the digital[ly] document need visual features to 
> tell the reader that the document was electronically signed by Mr. X at such 
> date and time. Adobe does it nicely, but it has only one fixed image set to do 
> so. Similar feature with custom images by the author is required, again with 
> provision for multiple signatures. This would greatly enhance the visual appeal 
> of the document and its authenticity. MS Word 2010 has already implemented such 
> a system, and they call it "signature lines", and one could add o[n]e or more 
> signature lines to a document.

Refer attachment 77281 [details] and attachment 77351 [details].