A Comparison of Three Visual Help Authoring Tools
http://www.slideshare.net/abelsp/a-comparison-of-three-visual-help-authoring-tools

Perlin, Neil E.
SlideShare
2007

Abstract:

What Are These Tools? Screen recorders that let you: record a series of screens as frames in a movie – like chaining together screen shots; annotate the frames with text captions, high-lights, and other effects for enhanced learning and explanation; add testing – informally through “dead-end” quizzes or formally using eLearning; publish the result.