The different between Serverside and Clientside is :
Serverside is calculated at the server in the location where its placed. too much serverside makes the server laggy.
Clientside is calaculated at your home computer. So all clientside cannot be seen by another people only the resulst "can" be shown to other people.
To make Serverside dont type on front //#CLIENTSIDE
if you are making CLIENTSIDE
make a
//#CLIENTSIDE
if you want to make both in one script make
Script of Serverside;
//#CLIENTSIDE
Script of Clientside;
Good Description ? Yes XD