A single Visualforce page. All pages must be wrapped inside a single page component tag.

An HTML input element of type password. Use this component to get user input for a controller
method that does not correspond to a field on a Salesforce object, for a value that is masked as
the user types.

An area of a page that uses styling similar to the appearance of a Salesforce detail page, but
without any default content.

A button that is rendered as an HTML input element with the type attribute set to submit, reset, or
image, depending on the <apex:commandButton> tag’s specified values. The button executes an
action defined by a controller, and then either refreshes the current page, or navigates to a
different page based on the PageReference variable that is returned by the action.

An <apex:commandButton> component must always be a child of an <apex:form> component.
See also: <apex:commandLink>

A Flash movie, rendered with the HTML object and embed tags.

An ordered or unordered list of values that is defined by iterating over a set of data. The body of
the <apex:dataList> component specifies how a single item should appear in the list. The data set
can include up to 1,000 items.

All messages that were generated for all components on the current page. If an <apex:message>
or <apex:messages> component is not included in a page, most warning and error messages are
only shown in the debug log.

A template component that provides content for an <apex:insert> component defined in a
Visualforce template page.
See also: <apex:composition>, <apex:insert>

The Log a Call publisher lets support agents who use Case Feed create logs for customer calls.
This component can only be used in organizations that have Case Feed, Chatter, and feed
tracking on cases enabled.

A component that displays the status of an AJAX update request. An AJAX request can either be
in progress or complete.