Tag Name
This is pre-populated with the page element name in the Layer panel. If you change the Tag Name it will update the object name in the Layer panel.
Tag Type
Text elements can be tagged as:
Text - This is the standard option for text automation
Rich text - If the text box is to be replaced with a separate document containing rich text styles, instead of plain text, select this option
Paragraph styles - ?
Tag Order
After the document re-sizes, there is an order with which each element of the artwork will re-size. This is important if elements need to re-size in relation to each other for example you may want the headline to be positioned first and then the sub-headline align to the new headline position.