The new Advanced Display Rule Editor is a text based editor which allows the publisher to not only type in their display rules freehand, but also to include more conditions as are needed to achieve the desired effect.
The standard editor can utilize up to 5 conditions. The advanced editor was implemented for those occasions when a more robust set of conditions is needed to be sure the correct people see the proper information. While text based, the structure of the rules when written are the same as when they are entered in the standard menu based editor.