Every Computer Science Engineer must have come across this..!

• Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

• The quick brown fox jumps over the lazy dog

• Alice and Bob

Have you ever noticed? why the above sentences are frequently used in templates such as graphic design, publishing, websites, etc,... 

Lorem ipsum

Lorem Ipsum is placeholder text commonly used in the graphic, print, and publishing industries for previewing layouts and visual mockups.

In publishing and graphic design, lorem ipsum is a filler text or greeking commonly used to demonstrate the textual elements of a graphics document or visual presentation. Replacing the meaningful content with placeholder text allows designers to design the form of the content before the content itself has been produced.

The lorem ipsum text is typically a scrambled section of De finibus bonorum et malorum, a 1st-century BC Latin text by Cicero, with words altered, added, and removed to make it nonsensical, improper Latin.

A variation of the ordinary lorem ipsum text has been used in typesetting since the 1960s or earlier when it was popularized by advertisements for Letraset transfer sheets. It was introduced to the Information Age in the mid-1980s by Aldus Corporation, which employed it in graphics and word-processing templates for its desktop publishing program PageMaker.

The quick brown fox jumps over the lazy dog

"The quick brown fox jumps over the lazy dog" is an English-language pangram—a sentence that contains all of the letters of the alphabet. It is commonly used for touch-typing practice, testing typewriters and computer keyboards, displaying examples of fonts, and other applications involving text where the use of all letters in the alphabet is desired. Owing to its brevity and coherence, it has become widely known.

Alice and Bob

Alice and Bob are fictional characters commonly used as placeholder names in cryptology, as well as science and engineering literature. The Alice and Bob characters were invented by Ron Rivest, Adi Shamir, and Leonard Adleman in their 1978 paper "A method for obtaining digital signatures and public-key cryptosystems. Subsequently, they have become common archetypes in many scientific and engineering fields, such as quantum cryptography, game theory, and physics. As the use of Alice and Bob became more popular, additional characters were added, each with a particular meaning.