What is Entity escape?

[steveschmidt85]

Originally Posted by chitra19

By escaping characters in HTML, the browser doesn't process them but still then we do come across instances where characters we have provided in the content is actually treated as code by the browsers. This is especially true when working with XML or XHTML.
In XML there are five characters entity references ( greater than >, less than <, ampersand &,quotation " and apostrophe ' ) that need to be escaped or the browser/parser doesn't treat them as markup. In these instances you must use entity escape code rather than the characters.

thanks it really explains well