... File Attachments . Each topic can have files attached to it, similar to an email attachment. ... Changed: . Attachments are stored under revision control: uploads can never be lost, and changes can be made to files with a rollback option to any previous version always available. ... However, you may want to change the comment to indicate you are doing that - the comment on the specific version isn't lost, you can see it when listing all the versions of an attachments. ... Revision 7 . ...