All the EL implicit variables are Maps except for pageContext. To remember the attribute-holding scope objects, just remember to Pick the Right Scope Automatically and stick the word "Scope" on the end: pageScope requestScope sessionScope applicationScope Then you have 4 param and header objects of the form : (param|header) param paramValues header headerValues Then I just remember the last 3: cookie initParam pageContext (not a Map, it's the JavaBean)

All the EL implicit variables are Maps except for pageContext.

To remember the attribute-holding scope objects, just remember to Pick the Right Scope Automatically and stick the word “Scope” on the end:

• pageScope
• requestScope
• sessionScope
• applicationScope

Then you have 4 param and header objects of the form : (param|header)[Values]

• param
• paramValues
• header
• headerValues