Use dot notation to specify an object, such as {!$ObjectType.Case}.
Optionally, select a field on that object using the following syntax: {!$ObjectType.Role_Limit__c.Fields.Limit__c}.
{!$ObjectType.Account.Fields.Name.Label}
You can also use dynamic references to retrieve information about an object through $ObjectType. For example, {!$ObjectType.Account.Fields['Name'].Type}