# Package org.zkoss.web.servlet.xel

- Interface Summary
  Interface | Description
  --- | ---
  PageContext | Represents a page context.
  RequestContext | The context used to simplify the signatures of XEL function.

- Class Summary
  Class | Description
  --- | ---
  AttributesMap | A skeletal implementation for Map to wrap something with enumeration of attributes, which must be String.
  ParameterMap | Represents a parameter map.
  RequestContexts | RequestContexts maintains a stack of `RequestContext` to simplify the signatures of the XEL function.
  RequestScope | Represents the request scope.
  RequestXelResolver | A XEL variable resolver that is based on Servlet request, response, and EL.
  StringKeysMap<V> | A skeletal implementation for Map to wrap something with enumeration of keys, which must be String.