- <string>
- A string to be output before or after the element
- <url>
- Points to external resource to be loaded
- counter()
- Outputs the value of a counter. Counter controlled by properties counter-increment and counter-reset
- counters()
- Outputs the value of all current counters separated by the specified string.
- open-quote, close-quote
- Outputs a quote character
- attr(X)
- Outputs a string that is the value of attribute X for the element in question
