Re: help please.
Virtually any "graphics" software can be used for this. What works well in addition to that is a "capture" software that allows you to go to any web site, picture, diagram, etc., and capture the entire page, anything on that page, or any part of anything on that page. Doesn't matter what software was used to create whatever it is you want to capture. I've used a program called Full Shot for years. Snag It is another variation. You capture the image, drop it into whatever graphics program you have and connect the various points with simple lines. Most of my diagrams are done with Full Shot, layed out in Microsoft Power Point, then the completed diagram is captured and saved as a .jpg image, uploaded to PhotoBucket for on-line storage. Don't know what Don S. uses but whatever it is it works great.