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Defining Fields
You can use the label sets described in this section to define three field types: Protected
Fields, Unprotected Fields and Transmit-Only Fields.
Protected Fields
When the terminal is in Format mode, it safeguards any information that occurs in a
protected field. You cannot enter data into these fields. If you press a character key, the
cursor advances to the next unprotected field before the terminal accepts the character.
All areas that you do not explicitly define as either unprotected or transmit-only fields
become protected fields.
Unprotected Fields
These fields accept data. The terminal positions the cursor to the next unprotected field
under these conditions:
• you request the next field by pressing the
[]ill
key.
• you have entered a character in the last character position of the current field.
• you attempt to enter data in a protected area.
Transmit-Only Fields (HP 700/94 Only)
The information in these fields rarely changes. Each time you transmit data to the com-
puter, the terminal sends this information, but it also "retains" a copy on the terminal
screen in preparation for the next transfer. Thus, you need not fill in these fields on
every form. (Common examples might be the day's date or the identification number of
the keyboard operator who is filling out the forms.) Most cursor movements (such as
those "automatically" generated by the terminal or your pressing the
[]ill
key) skip
transmit-only fields. To change the entry in a transmit-only field, you must move the
cursor to the field by using the cursor-positioning keys.
Data Checking (HP 700/94 Only)
Your terminal can test keyboard-entered data to verify that it is either alphabetic or
numeric. If an input character fails the test, the terminal gives a warning "beep",
displays an error message indicating what type of data this field accepts, and locks the
keyboard. Pressing the I
Return
I key clears the error condition. You may then enter the
correct information.
To have the terminal perform edit checks, you must define fields with edit-checking
capabilities.
4·8
Function Keys
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