Define pretty printing

Answer 1

Prettyprint is the application of any of various stylistic formatting conventions to text files, such as source code, markup, and similar kinds of content.

Answer 2

this same thing is written on net but I am not able to understand it properly

Answer 3

A pretty printer helps to standardize the source code of a program(that is it formats the layout). It helps in arranging the associated keywords in groups, indents the programming statements.It is mainly used in source codes of SAP ABAP programs.
[ABAP(Advanced Business Application Programming is a programming language for developing applications for the SAP R/3 system, a widely-installed business application subsystem.]