The product help for Knowledge Management is most useful in this area because it tells you how to add in these types of files so that they are searchable and also lists which extensions can be added:
I hope this answers your query.
Thanks Karen, but I cannot access the link, can you share the link with me again?
Do you mean we can just check the checkbox in Knowledge Management Administration -> Configuration -> Knowledge Management -> Attachment ?
By clicking this checkbox, does it includes the text in the attachment as well? Thanks!
I think that you're describing adding a document rather than an article with an attachment (unless I'm misunderstanding you)
I think that's here:
We're looking at doing this now