Input Fields; Numeric Fields - IBM 3174 Reference Manual

Input Fields
Numeric Fields
Using Your ASCII Terminal
When a screen is divided into fields, it is known as a formatted screen. A screen
that is not divided into fields is known as an unformatted screen. Each job that you
work on could use a different format or no format at all. Therefore, you might be
working with both formatted and unformatted screens.
The screen shown in the sample display image (Figure 3-2) is an example of a
formatted screen.
Employee Information Record
Employee Name:
Employee Address:
Identification Number:
Salary:
Enter employee information, then press ENTER.
To exit this function, press PF3.
SA?
Figure 3-2. Example of a Display Image (Formatted Screen)
An actual 3270 terminal has an Operator Information Area (or status line) on the
last line of the screen. This area displays operating and status messages
associated with your terminal operation. The status line is displayed on line 24 or
line 25 of the screen, depending on the type of terminal you are using. If your
terminal has only 24 lines, you must type in a key sequence (called Status On/Off in
the keyboard maps) to view it. The status line is shown as the last line in the
example. Refer to "Understanding Your Status Line" on page 3-13 for a
description of the status line.
An input field is a field in which you can enter data. Each application program
user's guide tells you which are the input fields for that particular job.
In the example, the area after Employee Name: is an input field.
The quantity and names of fields that you see on your screen depend on the job
you are doing and on the application program that is operating in the host system.
Numeric input fields are fields that normally accept as input the characters 0 —9,
the decimal sign, the minus sign, and DUP (or the equivalent of those keys). In the
example, the fields following Identification Number: and Salary: are likely to be
numeric fields. When you move the cursor into the numeric field, the MUM
indicator is displayed in the Operator Information Area.
Operating any other function that generates a displayable character causes an
input-inhibited condition. Use the Reset key sequence to enable the keyboard if it
is disabled.
Chapter 3. Using Your ASCII Terminal 3-7