In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.

A Virtual Private Network , or VPN is a set of technologies which are used to link computers to create a private network .
A virtual private network ( VPN ) extends a private network across a public network , and enables users to send and receive data across shared or public networks as if their computing devices were directly connected to the private network .

Then they are left to grow back their natural vegetation , while the farmer moves to another area .
Shifting cultivation is an agricultural system in which plots of land are cultivated temporarily , then abandoned and allowed to revert to their natural vegetation while the cultivator moves on to another plot .

Mazar-e-Quaid or the National Mausoleum refers to the tomb of the founder of Pakistan , Muhammad Ali Jinnah .
Mazar-e-Quaid , also known as Jinnah Mausoleum or the National Mausoleum , is the final resting place of " Quaid-e-Azam " ( " Great Leader " ) Muhammad Ali Jinnah , the founder of Pakistan .