Roll Keys; Cursor Keys; Field Exit Key - Intermec CK30 Programmer's Manual

Roll Keys

Cursor Keys

Field Exit Key

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TE 2000 5250 Terminal Emulation Programmer's Guide
Roll Up and Roll Down are AID keys the terminal sends to the host to
request and display additional screens. The host transmits a new screen in
response to this command. The new screens allow you to view data either
above or below what appears on the current screen.
5250 Terminals support the Roll command (hex 23) received from a host
application. Using this command, a host application can roll an area of the
screen up or down. The direction of the roll and number of lines to roll
are specified in the command.
Do not confuse the Roll Up and Roll Down AID keys with the Roll com-
mand. The Roll keys cause the host to send down additional screens when
you are at a Roll screen. A Roll screen typically has text in the lower right-
hand corner of the screen indicating that there are additional screens to
view.
Note the following:
S A Roll command received from a host application moves the screen, but
not the window/viewport. The screen scrolls through the window/view-
port when you roll up or down, but the window/viewport remains sta-
tionary.
S Paging keys (window/viewport page up, window/viewport page down,
window/viewport page right, window/viewport page left) move the
viewport within one screen. They do not move the screen itself.
For help with the Roll command, see Chapter 6, "Display Data Stream."
You can manually move the terminal's window/viewport by using the cur-
sor keys and paging keys. For more information about the window/view-
port, refer to the terminal's user manual.
Field Exit exits an input field and moves the cursor to the beginning of the
next input field. If you press this key while the cursor is between charac-
ters, then all characters to the right of the cursor are erased.
Note: On Trakker Antares terminals, you can set the Postamble or
Preamble command to use characters from the extended ASCII character
set such as the Field Exit code for 5250 TE. For help, see "Auto-Advancing
through Fields" earlier in this chapter.
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Chapter 2 Using Terminal Emulation Applications
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