Many thanks for the response. I have used screensteps and it is an excellent product. Unfortunately, I was looking for a bit more functionality. For example, screensteps works on a text then graphics then text then graphics, linear style which, although great for manuals, is a bit too 'big' for what I am looking for. Often I produce a process and try to keep it to two sides of A4 as it is my experience the students (I mainly teach older adults) prefer a single sheet of paper (or 2 at most). The statement your colleague made is entirely true and I am trying to get as much pictorially as I can onto 2 sides of A4 and add instructions as well, hence the requirement to use as much of the space as I can without being too cluttered. That's why, at the moment, I am using the 'drawing' approach to have, say, some text and a small screen capture in a line on the screen as opposed to one on top of the other. Also, and this is the deal breaker, screensteps isn't portable. I also felt a bit restricted by the lack of proper outlining in that I was restricted to manuals and steps and would have liked a bit more flexibility (although that is a personal preference and no reflection on the software). In summary then, a great piece of software but not portable.
Many thanks again for your input.