Wink is a Tutorial and Presentation creation software, primarily aimed at creating tutorials on how to use software (like a tutor for MS-Word/Excel etc). Using Wink you can capture screenshots, add explanations boxes, buttons, titles etc and generate a highly effective tutorial for your users.
I first saw Wink in operation at my former school's website. The teacher librarian who replaced me has created a great tutorial on how to use EBSCOhost to locate a magazine article. An excellent and useful tutorial.
I'd like to create a tutorial for using Moodle for WEMTA's Battle of the Books.