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Understanding the Display Image
Input Fields
The screen of your terminal shows you a display image. An example of a display
image is shown in Figure 2-1 on page 2-3. The format of this image varies
.
according to the application program you are using. The image may contain areas
that you use to enter data to be processed by the application program; it may also
contain areas that are used only for display of information to you. These areas are
called fields.
When a screen is divided into fields, it is known as a formatted screen. A screen
that the program has not divided into fields is known as an unformatted screen.
Each job that you work on could use a different format or none at all; therefore,
you may be working with both formatted and unformatted screens.
The screen shown in our sample display image is an example of a formatted screen.
An actual 3270 terminal has a special "operator information area" below the last
data line of the screen. This area is used to display operating and status messages
that are associated with your terminal operation. The 3708 provides the same type
of information in a status line. The status line is displayed in a special area below
the last data line of the screen or over the last data line of the screen, depending on
the type of terminal you are using. The status line is shown as the last line in the
example on page 2-3. Refer to "Reading the Status Line" on page 2-12 for a
description of the status line.
An input field is one into which you can enter data. Each application program
user's guide should tell you which fields are input fields for that particular
application.
In the example, the area after Employee Name: is an input field.
The number and names of fields on your screen depends on the job you are doing
and the application program operating in the host system.
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IBM 3708 End-User Reference
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