An HTML input element for a value that corresponds to a field on a Salesforce object. The
<apex:inputField> component respects the attributes of the associated field, including whether the
field is required or unique, and the user interface widget to display to get input from the user. For
example, if the specified <apex:inputField> component is a date field, a calendar input widget is
displayed. When used in an <apex:pageBlockSection>, <apex:inputField> tags always display
with their corresponding output label.
Note that if custom help is defined for the field in Setup, the field must be a child of an
<apex:pageBlock> or <apex:pageBlockSectionItem>, and the Salesforce page header must be
displayed for the custom help to appear on your Visualforce page. To override the display of
custom help, use the <apex:inputField> in the body of an <apex:pageBlockSectionItem>.
Consider the following when using JavaScript events with this tag:
For lookup fields, mouse events fire on both the text box and graphic icon
For multi-select picklists, all events fire, but the DOM ID is suffixed with _unselected for the left
box, _selected for the right box, and _right_arrow and _left_arrow for the graphic icons
For rich text areas, no events fire.

A component that adds AJAX support to another component, allowing the component to be
refreshed asynchronously by the server when a particular event occurs, such as a button click or
mouseover.
See also: <apex:actionFunction>.

A graphic image, rendered with the HTML <img> tag.

A component that inserts a second Visualforce page into the current page. The entire page
subtree is injected into the Visualforce DOM at the point of reference and the scope of the
included page is maintained.
If content should be stripped from the included page, use the <apex:composition> component
instead.

Defines an axis for a chart. Use this to set the units, scale, labeling, and other visual options for

the axis. You can define up to four axes for a single chart, one for each edge.
Note: This component must be enclosed within an <apex:chart> component. This component is
only applicable to bar and line charts.