I can't understade Predefined Variables?

Can you describe me this my problem?

11th Apr 2017, 5:05 AM
Tahir Arain
Tahir Arain - avatar
1 Answer
+ 1
Predefined is the key word here and once you understand that then you'd know what is meant with predefined variables. They are variables that are already created with a purpose.
11th Apr 2017, 8:38 AM
Ghauth Christians
Ghauth Christians - avatar