Although you can alternately use any logical screen, only one of
the logical screens is considered active at a time. The location of
the cursor identifies the active screen. You make a screen active
by using the SWAP command and its parameters to choose the desired
screen.
The parameters on the SWAP command (LIST, PREV, NEXT, screen_name,
and n) control which screens you see displayed.
- SWAP command without parameters in 3270 mode
- If only one screen exists, this command has no effect. If more
than one screen exists, this command moves the cursor between the
two logical screens that are displayed.
- SWAP command without parameters in GUI mode
- If only two screens are present, the cursor moves to the one that
it is not currently on. If more than two screens exist, this command
defaults to the SWAP LIST command and causes the ISPF task list to
display in a pop-up window. See SWAP
LIST command in GUI mode for more information.
- SWAP PREV|NEXT|screen_name|n commands in both modes
- Entering SWAP PREV changes the focus (for GUI mode) or display
(for 3270 mode) to the next lower screen number from the one where
the command is entered. Repeatedly issuing the same command causes
each lower-numbered screen to display until screen number 1 is reached,
then the counter wraps back to screen number 32 (or your installation's
maximum number).
Entering SWAP NEXT changes the focus (for GUI
mode) or display (for 3270 mode) to the next higher screen number
from the one where the command is entered. Repeatedly issuing the
same command causes each higher-numbered screen to display until screen
number 32 (or your maximum) is reached, then the counter wraps back
to screen number 1.
Entering SWAP screen_name changes
the focus (for GUI mode) or display (for 3270 mode) to the screen
named screen_name if it is active.
Entering
SWAP n changes the focus (for GUI mode)
or display (for 3270 mode) to the screen numbered n (ZSCREEN
variable) if it is active.
- SWAP LIST command in 3270 mode
- This command displays the ISPF Task List, from which you can select
which screen to display. The screen you select replaces the screen
on which you entered the command.
- SWAP LIST command in GUI mode
- This command displays the ISPF Task List (Figure 1), from which you can select which
screen to focus on.
All of the fields on the ISPF Task List panel are point-and-shoot
fields. The results when choosing one are as follows:
- Start a new screen
- Starts a new logical ISPF screen.
- Start a new application
- This field is used in conjunction with the Application Name field.
If you choose "Start a new application" you must enter an application
name in the "Application Name" field.
- Application Name
- The name of an application you want to start by choosing the "Start
new application" field on the ISPF Task List panel. This application
is started in a new logical screen. ISPF invokes the application through
the ISPF START command, so any application name and parameters that
are valid for the START command are valid in the Application Name
input field. If you need more space to enter the application name
and parameters, press the Expand PF key to display a pop-up window
that contains a longer input field.
For example, if a user types
"keylist" in the Application Name input field and presses Enter, the
ISPF KEYLIST application is invoked in a new logical screen.
- Select a screen from the list of active sessions
- Provides a list of active sessions for you to choose from.