Lynn,
Sorry for the confusion. You actually need to edit the screen to see the actions. First, you will need to go to Customize tab > Screens and copy the CRM_ListBuilder screen. Once copied, you can click edit on the copied screen. Once there, you can scroll to the bottom of the screen and you should see the process all button (will look like the screen below). Click edit on the button (far right) and you should see the actions.
As for the link, it seems to work for me. The merge fields description can be found under the Character Function. If you scroll down, you will see a "Replace <> fields" heading, roughly halfway down the page.
- Adam