Brightness ratio is the difference in light intensity between brightest white and darkest black produced by a monitor

_______ is an animation engine used by Valve for its games and licensed for other game developers.

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

Answer the following statements true (T) or false (F)

1. It is possible for a structure to contain as a member a pointer to its own structure type. 2. The statement Rectangle * boxer; defines a variable boxer to be a pointer pointing to a type Rectangle. 3. An array name is a pointer constant because the address it represents cannot be changed during run-time. 4. A temporary value in a program can be referred to by at most one l value reference.