The Tailor Function Key Definition Display panel (shown in Figure 1) allows you to change the format of the function key definition lines that are displayed at the bottom of the screen. To display this panel, perform one of these actions:

• Select the "Tailor function key display" choice from the Function keys pull-down.
• Issue the PFSHOW TAILOR command from any command line.

   ┌───────────────────────────── ISPF Settings ─────────────────────────────┐
 ─ │                 Tailor Function Key Definition Display                  │
   │                                                                         │
   │ For all terminals:                                                      │
 O │   Number of keys  . . 2  1. 12                                          │
   │                          2. 24                                          │
   │                                                                         │
   │   Keys per line . . . 1  1. Six                                         │
   │                          2. Maximum possible                            │
   │                                                                         │
   │   Primary range . . . 1  1. Lower - 1 to 12                             │
   │                          2. Upper - 13 to 24                            │
   │                                                                         │
   │ For terminals with 24 PF keys:                                          │
   │   Display set . . . . 1  1. Primary - display keys 1 to 12              │
   │                          2. Alternate - display keys 13 to 24           │
   │                          3. All - display all keys                      │
   │                                                                         │
 T │ Press ENTER key to save changes.  Enter END to save changes and exit.   │
   │                                                                         │
   │ Command ===>                                                            │
 C │  F1=Help       F2=Split      F3=Exit       F7=Backward   F8=Forward     │
   │  F9=Swap      F12=Cancel                                                │
 F └─────────────────────────────────────────────────────────────────────────┘

From the Tailor Function Key Definition Display panel you can set these function key parameters:

Number of keys

The number of function keys you specify controls the particular set of function key definitions currently in use.

ISPF automatically determines the terminal type, screen size, and number of function keys:

• If the screen size is greater than 24 lines, but the terminal type specified implies a maximum of 24 screen lines, ISPF sets the terminal type to 3278.
• If you press a function key higher than 12, but the value specified for the number of function keys on your terminal is 12, ISPF sets the terminal type to 3278 and the number of function keys to 24.

ISPF cannot determine the terminal type or number of function keys in these cases:

• If you switched between a 3277 and 3278 Model 2, both of which are 24-line terminals
• If you switched from a terminal with 24 function keys to a terminal with 12 function keys.

In these cases, you must inform ISPF of the terminal type and number of function keys you are using. Otherwise, ISPF uses an incorrect character set and invalid function key definitions.

ISPF automatically sets, or changes, the number of function keys in these cases:

• If you specify 3277, ISPF initializes the number of keys to 12.
• If you specify 3278, ISPF initializes the number of keys to whatever was stored from the user's last ISPF session. If no number is stored from a prior session, the number of keys is initialized to 12.
• If you press a function key higher than 12, ISPF sets the number of keys to 24. ISPF cannot set the number of keys to 24 for the 3278T terminal.

Keys per line

You can specify the number of keys per line to be displayed on the function key definition lines. Six or Maximum possible can be specified, indicating either six keys or the maximum possible keys. Six ensures consistency across all panels. Maximum possible can save space on crowded panels. The Maximum possible option is forced when you select the Panel display CUA mode option on the ISPF Settings panel.

Primary range

You can specify that the primary key range be:

Lower

Primary keys are F1-F12.

Upper

Primary Keys are F13-F24.

The default value is lower.

Display set

For terminals with 24 function keys, you can choose to display only the primary set of function keys (F1-F12, the default range), the alternate set of function keys (F13-24), or all 24 keys. Your display choices depend on which range you specify for the Primary range option. For terminals with 12 function keys, this setting is ignored.