Why is there a tilde ( ~ ) in the name of my Web Intelligence folder in My Favorites? Is that a default folder and if so, what goes into it?

Web Intelligence is administratively configured for 'autosave', and if you have the appropriate security rights, Web Intelligence saves your documents automatically in the My Favorites / ~Web Intelligence folder as you work.

Web Intelligence uses the document name prefixed by the document ID and followed by the autosaved document ID to name autosaved documents.

Note: Do not 'manually' save reports into the ~Web Intelligence folder!