Valid values for page-function are:
 
Function Meaning 
  A      All logical messages destined for and being displayed 
         on that terminal. 
  C      The current (level) logical message. 
  L      The last page. 
  N      The next page. 
  P      The previous page. 
  Q      (Query) display the identifier of all logical messages 
         destined for this terminal. If the message is security 
         protected, its identifier is displayed only if the operator 
         identifier and class for the signed-on operator match 
         those in the message. The identifier consists of 
         1-to-6-digit hexadecimal number, and optionally, a 
         message title.