Answer: This may help.
In archeology, the term "Parietal art" (also referred to as "cave art") is used to denote any prehistoric art found on cave walls. It embraces all types of cave painting, all forms of engraved rock art, or other petroglyphs, as well as any relief sculpture carved on walls, floors or ceilings.
Hierarchy is a visual design principle which designers use to show the importance of each page/screen's contents by manipulating these characteristics: Size – Users notice larger elements more easily. Color – Bright colors typically attract more attention than muted ones
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