Many Dots

Here is a program that writes 10,000 points to the screen:

SCREEN 12
FOR DOT = 1 to 10000
  LET X = INT( 640*RND )
  LET Y = INT( 480*RND )
  PSET( X, Y)
NEXT DOT
'
END

There are some details in this program that will be discussed in a while. For now, study the loop in the program:

'start graphics screen 12

FOR DOT = 1 to 10000

  ' Do something

NEXT DOT
'
END

The body of the loop is done 10,000 times. Now look at that body to see what is done so many times:

  LET X = INT( 640*RND )
  LET Y = INT( 480*RND )
  PSET( X, Y)