Thanks Julia, Yes you are right - it's time to get someone else to test it.
I have someone lined up and they at least understand the purpose of the software. I was going to release it to them, but my brother pointed out that it would not be a good idea if there wasn't a good help system. So that's where I am now. I was trying to avoid it. silly really.
The person I have in mind has told me that they aren't that great with computers - so possibly they would be the perfect candidate?
As per Marks suggestion, I've changed the ? symbol icons to an "i" and blue with white text. I think it does look better but I'm happy for anyone to choose a colour - perhaps the blue is too bright?
Nevertheless, the icons only appear when the main "i" icon is "toggled" - I could probably get rid of the word Help.
Help/Info toggled ON:
toggled OFF: (much cleaner)
That awful green play/replay icon (r/h side of the graph window) could be a dark grey?
It's taken 2 years+ (part time) to get this point. I do need/want this to be tested, but this help system is the final hurdle and it's becoming the hardest part to overcome.