Understanding Unicode

Hundreds of encoding system available to map characters to numbers

Unicode is widely accepted. This ensures support in multi platform without re-engineering.

Unicode is first defined in early 1990s.

To support non engligh languages, scientific special notations,

https://www.evertype.com/

Unicode names of characters are written with all uppercase.

Ex: U+00B7

Important: While authoring XML, HTML you can use character reference of the form &#xnumber - eg: &#x212e