vs code saving on tab change off code example

Example 1: multiple word select in vs code

//Selects the word at the cursor, or the next occurrence of the current selection.
Ctrl+D 

//To add cursors to all the occurrences of a highlighted word 
Ctrl+Shift+L 
//Then select all occurrences of that word

Example 2: how to save files in a repository visual studio code

def fib(number):
    if number in [0, 1]:
        return 1
    else:
        return fib(number - 2) + fib(number - 1)