What is the PPT typesetting crap?

crap is a four basic design principle proposed by a man named Robin Williams, which is actually the initials of four English words:

C--contrast (contrast)

R--repetition (repeat)

A--alignment (Align)

P--proximity (Intimate)

Figure 1: Contrast, the essence is the difference, there are differences to highlight the focus, dynamic and not rigid.

Figure 2: Repetition, in fact, is a kind of unification, it will contrast caused by the messy, integrated in a unified style, create consistency.

Figure 3: Alignment creates a unique flow style on the slide, creating a visual connection for different elements. PowerPoint Tutorials

Figure 4: Intimacy, refers to the contents of the slide has a tight, dense, and so will have a sense of rhythm, look at will be comfortable.

This four principle is for the entire graphic design, such as book cover, web design and so on. and application in PPT is a duck in the fish. Look at your own production of PPT, in line with these four principles?