Account – you can select a specific account, use the * Default account, or use an Excel cell reference (click the button provided) .
List ID – enter the list id number or click the lookup button to pick from the available lists in the account.
Limit – using a limit of 0 will download all list members (contacts / email addresses) for the account. You can limit the number by entering a value.
Modified Since – If you are only interested in more recently modified lists, you can use this option to pick a start date or time period (relative to today).