### sage 5.3: no object "simplify_full" currently defined

I compiled sage 5.3 from source, everything was successful. So far I have not installed any of the optional packages. However, I cannot find any of the specific simplify-functions. (Error message: "no object 'simplify_full()' currently defined") The only thing I am able to use is `simplify()`

. Am I missing something?

Edit to answer SLOtoSF profound question, "what have you ~~tried":
1) Autocompletion
2) ~~tried":

- Autocompletion
- "sage>
~~simplify?"
3) ~~simplify?" - reference
~~documentation
4) ~~documentation - google search (e.g., "sage 5.3 simplify_full", "no object 'simplify_full()' currently defined"
~~...)
5) ~~...) - asksage search "simplify_full" and
~~"full_simplify"
6) ~~"full_simplify" - don't remember what else...