A(n) ________ shows how all pages in the presentation will display

In a new document, the first time you click on Save, the Save ________ dialog box opens

Fill in the blank(s) with correct word

When musicians work with additive synthesis, they will often wrap envelopes around the sounds, and even around each added sine wave. An envelope changes the amplitude over time—it might start out small, then grow (rapidly or slowly), then hold at a certain value during the sound, and then drop before the sound ends. That kind of pattern is sometimes called the attack-sustain-decay (ASD) envelope. Pianos tend to attack quickly, then decay quickly. Flutes tend to attack slowly and sustain as long as you want. Try implementing that for the sine and square wave generators.

Note: It is unclear what “that” refers to in the last sentence of the question. Due to its proximity, the best assumption is that it refers to the previous sentence, especially given that that the sine and square generations can sustain for “as long as you want”.