The document describes a for loop in programming, which is used to repeat an instruction a specified number of times. It illustrates this with the repetitive output of the phrase 'are we there yet?' as an example. The content emphasizes the concept of iteration in coding.

1. For x in range(3)
print("Are we there yet?")
FORLOOPS
Ar e we t her e yet ?
Ar e we t her e yet ?
Ar e we t her e yet ?
Af or l oop wil l r epeat an inst r uct ion
you give as many t imes as you ask it
t o be r epeat ed.