Dia is a very powerful diagramming program. It is easy to draw all the different types of diagrams that are required in the pharmaceutical field. The ease of drawing different diagrams is very helpful to the pharmaceutical field. Dia is very good and I would recommend this software to anyone who is involved in the pharmaceutical field. I am not really sure what I can say here, Dia is a very good program and I would recommend it to anyone who is involved in the pharmaceutical field. It's easy enough for anyone who has used other drawing programs in their life time, but also it makes more complex drawings with multiple branches easier than any software I have ever seen or heard of before! Drawings are simple even if they contain many elements (which can be complicated). No problems that come up so far when using this application over about 3 months now at work where we use it as an internal tool during daily tasks, like project planning/management & budgeting etc.