For example, the purple, green, blue, etc. (including the flashing boxes)
The icons have different colors depending on what changed in the document. Green means that a strip and replace rule happened. Light purple means that a data match happened. Blue means that a field’s value changed due to a transformation rule such as the date in YYYY-MM-DD format. I believe that you will get a white circle if it is a field merge rule. If a field fails validation, it will have a magenta or red border depending on whether the rule is hard or soft. The little circles that appear have nothing to do with validation; They are transformation indicators. A green border around a field indicates that there are validation rules for a field and it passed.