... Each topic can have files attached to it, similar to an email attachment. ... File Attachments can be used to create powerful groupware solutions - file sharing, document management - and for speedy Web authoring. File Attachments can be used to create powerful customized groupware solutions, like file sharing and document management systems, and quick Web page authoring. ... Attach file: Sample.txt . ... To hide/unhide an attachment, enable the Hide file checkbox, then click Change properties . ...