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.