An action is a programmable button that can be used to automate tasks. Actions normally appear in the Action bar, which can be displayed in forms, subforms, pages, folders, and views. Additionally, actions may be displayed in the Actions menu in the Notes client. Actions can be shared, enabling you to use an action in multiple forms, pages, views, and so on. Actions are most often used in the following situations:
When you want to automate a function, but don't want the code stored with each individual design element.
When Web clients need substitutes for Notes client menu choices (through the Action bar).
When users need to see all the possible choices in a nonscrolling row at the top of a form ...