To overload functions with symbolic names (like + - / <<), you must use the keyword _______ before the symbolic name.

Which of the following is NOT a type of search engine?

A) Keyword B) Subject-oriented C) Metasearch D) Category-based

When the Pushpin icon on the Auto Hide button is vertical, the Toolbox is said to be in ____________________ mode.

Fill in the blank(s) with the appropriate word(s).