$Action
A global merge field type to use when referencing standard Salesforce actions, such as
displaying the Accounts tab home page, creating accounts, editing accounts, and deleting
accounts.
Usage
Use dot notation to specify an object and an action, for example, $Action.Account.New
Example
The following markup adds a link
to create a new account:
The following markup adds a link
to download an attachment:
<apex:outputLink value="{!URLFOR($Action.Account.New)}">
Create New Account
</apex:outputLink>
<apex:page standardController="Attachment">
<apex:outputLink
value="{!URLFOR($Action.Attachment.Download,
attachment.id)}">
Download Now!
</apex:outputLink>
</apex:page>