Below is a picture of a musical staff. What is a musical staff? What do the top lines and the bottom lines represent?

The lines and spaces are numbered from bottom to top; the bottom line is the first line and the top line is the fifth line. The musical staff is analogous to a mathematical graph of pitch with respect to time.

Explanation:

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cad, or computer-aided design and drafting (cadd), is a software for design and technical documentation, which is an automated process as opposed to the manual drawing of plans. this gives a person an advance in making plans as an architect in a short period of time. one who can render plans through this software will gain a skill that is better than one who makes plans manually. this is a skill some companies look for in an employee.