You will want to learn the usage for these common $Actions that you may need to execute from a custom Visualforce page CommandButton or CommandLink, but that are not included in the common set of directly bindable actions:

Share:
<apex:commandButton value=”Share” action=”{!URLFOR($Action.Account.
Share, Account.id)}”/>

Clone:
<apex:commandButton value=”Clone” action=”{!URLFOR($Action.Account.
Clone, Account.id)}”/>

New:
<apex:commandButton value=”New” action=”{!URLFOR($Action.Account.
New)}”/>

Tab:
<apex:commandButton value=”Tab” action=”{!URLFOR($Action.Account.Tab,
$ObjectType.Account)}”/>