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701344-003 4-9
Operating Procedures
Cursor Select Data Entry
The Cursor Select key, CrSel, can be used to select certain data fields from a
formatted screen. The application program must define selectable fields by
writing the appropriate attribute. These data fields are read by the application
program for additional processing.
Each selectable data field is preceded by an appropriate field attribute character and a
designator character. Designator characters precede one of two types of fields: selection
fields or attention fields. With the Cursor Select key, items in a selection field can be
selected and then the program can be notified of the selection by selecting an attention
field.
An unselected selection field is preceded by a question mark (?), which changes to a
greater than symbol ( >) when the field is selected. Attention fields are preceded by an
ampersand (&) or space. These symbols do not change when an attention field is
selected.
To select or deselect a field, move the cursor to cover the appropriate designator character
or any character in the field and press the Cursor Select key. The question mark preceding
the field changes to a greater than symbol after the field has been selected. If you accidently
select the wrong field, you can deselect it by pressing the Cursor Select key again in the
same field. The greater than symbol preceding the field changes to a question mark after
the field has been deselected.
For some programs, after you have finished selecting fields, press the Enter key to send
the fields to the host application program for additional processing. The selected fields
also can be sent by selecting an attention field designator character using the Cursor
Select key. The ampersand and space characters designate attention fields. Move the
cursor to cover any character in the field and press the Cursor Select key to send the
attention field data along with data in any other selected field on the screen.
Exiting the Cursor Select operation depends upon the program in use. Refer to a user’s
guide for your application for the proper procedure.
Data Editing Function
You can change the contents of a message before you send it to the CPU, or you can call
up a previously entered message for editing.
Use the Attention, PA, F, PF, Clear, or Enter key to call up a previously entered message,
or use a series of sign-on commands and programmed CPU responses. The sign-on
commands are automatically initiated when the display station comes online. Contact
your supervisor or refer to a system user’s guide for appropriate recalling procedures.
All keys described in “Keyboard Operations” beginning on Page 4-4 can be used to edit
data messages. In addition, the following keys can be used to add or delete information:
Press the Insert key to enter Insert mode for adding characters at the cursor’s current
position. Press Reset to exit Insert mode. The symbol
is displayed on the operator
status row to indicate the display station is in Insert mode.