Command
A command is an instruction that, when issued by a user, causes an action to be carried out. Web Interface users select commands from a menu in the Command pane. Some examples of commands are New User on the Organizational Unit menu, General Properties on the User menu and Members on the Group menu.
Each command is intended to perform a certain task, such as displaying property pages. You can customize pages associated with a command.
Form
A form is a structured page with predefined areas for entering and changing information. A form consists of elements such as text boxes, check boxes, option buttons, and command buttons. Form elements allow users to perform actions, make choices, and identify and enter information. A form is a set of pages (tabs) associated with a command that requires data entry. You can customize a form by adding or removing tabs and entries.
Tabs
Since an object normally has a large number of properties, it may be necessary to categorize and group properties within a form. A tab represents a group of properties located on a separate page, such as General, Address or Account on the Properties form for User objects. By clicking tabs, you can access pages to view or modify properties. You can add or remove tabs from a form, and change the order of tabs.
Entry
An entry is a group of elements on a form that are intended to view or modify a property of an object. For example, the First name entry is used to manage the value of the givenName property. You can add or remove entries from a form, and change the order of entries.