Panasonic KX-T336 System Reference Manual page 886

1.02 Pre-entering Mode
The mode before going into the Programming
mode or Operation mode is defined as "Pre-
entering mode," that is, for entering the
"Programming mode" or "Operation mode."
Programming
mode prompt
Pre-entering mode
; Select the mode
; Programming mode -------- PRG
; Operation mode
; (displays command information-- HLP)
; >
After entering PRG, press RETURN.
Programming mode
; PRG >
For details about operation in the Programming
mode, refer to Section 8-D "Input Format-
General" and Section 10 "System Programming
(Dumb Type Terminal)."
8-B-2
1.03 Programming Mode
This mode is used to assign or change the
system programming data.
The flow chart below illustrates the procedures for
advancing the mode from "Pre-entering mode" to
"Programming mode."
------------ OPE
Mode Selection
screen