As you know by now, Do Loop allows the script to continue to perform certain actions until a specific condition occurs. Do While...Loop allows your script to continue to perform these actions as long as the specified condition remains true. Once the specified condition is no longer true, Do While...Loop exits. In contrast, the Do Until...Loop has the opposite effect—the script continues to perform the action until a certain condition is met.
"So what?" you might ask. In and of itself, Do Until is not all that exciting, but you can use it to perform certain tasks. Here are common uses of Do Until:
Read text from a file
Read through records in a record set
Create a looping condition for monitoring purposes
Each of these implementations ...