tag microformat is used to add tags to other microformats.
The value of each property is a string.
| ||The name of the tag. This is the text after the last forward slash in the link. Required.|
| ||A URL associated with the tag. Required.|
| ||The text associated with the tag. Required.|
Returns the tag as a string.
tagString = tag.toString();
The tag as a single string. This is currently simply the value of the