Showing the "big picture", the data-flows, the relations, etc. are all prime-candidates where visual presentation can sell better than text. A well made diagram

Showing the "big picture", the data-flows, the relations, etc. are all prime-candidates where visual presentation can sell better than text. A well made diagramm can be more informativ than any amount of text. On top, having your code in a structued source, you can easily manpulate the structure itself and get alternatice views. Ther eis literate programming which kinda goes into this direction, there you detache the sourcecode-organisation from it's technical organisation. Thouhg, this of course is not directly linked to "visual" programming, but work on the same conditions.