Do…Loop

Repeats a block of statements while a condition is True

Do [While condition]
  [statements]
  [Exit Do]
  [statements]
Loop

OR

Do
  [statements]
  [Exit Do]
  [statements]
Loop [While condition]

Repeats a block of statements until a condition becomes True:

Do [Until condition]
  [statements]
  [Exit Do]
  [statements]
Loop

OR

Do
	[statements]
	[Exot Do]
	[statements]
Loop [Until condition]