Standard Controller Action

<apex:page standardController="Contact">
<apex:form
><apex:commandButton action="{!save}"
value="save"/>
<apex:commandButton action="{!quicksave}"
value="quicksave"/>
<apex:commandButton action="{!edit}"
value="edit"/>
<apex:commandButton action="{!delete}"
value="delete"/>
<apex:commandButton action="{!cancel}"
value="cancel"/>
<apex:commandButton action="{!list}"
value="list"/>
<apex:inputField
value="{!contact.LastName}"/>
</apex:form>
</apex:page>

return (new ApexPages.StandardController(account)).cancel();
return (new ApexPages.StandardController(account)).save();
return (new ApexPages.StandardController(account)).edit();//goto edit page
return (new ApexPages.StandardController(account)).view();//goto detail page