Designing and Using Forms
This
section covers
the
following topics:
•
Data
Fields
• How to Design
Data
Entry
Forms
• How
to
Transfer Forms from
the
Screen to a Host Computer
•
Enabling
and
Disabling
Format
Mode
• Terminal Operation
in
Format
Mode
• How to Send
Format
Mode
Data
to a Host Computer
DATA
FIELDS ON A
DATA
ENTRY FORM
Your form
may
contain
three
types of
data
field definitions; protected, unprotected,
and
transmit-only.
Protected Data Fields
The
terminal
operator
cannot
alter
or delete any characters
that
lie
within
a protected area.
Protected
characters
are
not
transmitted
to
the
host computer.
The
line
segments
and
annota-
tions
that
constitute
the
form's
structure
are
designated
as
protected
data.
Unprotected Data Fields
The
operator
enters
data
into unprotected fields. When
the
operator
presses.
the
data
in
unprotected fields
is
transmitted
to
the
host computer. When a
character
is
entered
into
the
last
position of
an
unprotected field,
the
cursor automatically advances to
the
start
of
the
next
unprotected field.
The
operator may also use
the
Tab keys
to
move
the
cursor to
the
start
of
the
next
unprotected field.
Transmit-Only Fields
Transmit-only fields
are
similar
to unprotected fields,
in
that
they
are
also
sent
to
the
computer
when
the
operator presses
the.
key. These fields
may
be.modified by
using
the
cursor control keys
or
commands to position
the
cursor
in
the
field. (The Tab keys skip over
transmit-only
fields.)
After
reaching
the
end of
the
transmit-only field,
the
cursor moves to
the
beginning of
the
next
unprotected field.
Transmit-only fields
are
desirable when you
want
to send fixed
data
such
as
headings
or
labels to
the
computer or when
certain
fields need to be modified only infrequently (e.g.
dates).
Security Fields
Data
entered into a
security
field is not displayed when
it
is typed in. This
type
field is useful
for
entering
passwords or
other
security-sensitive
data.
5-2
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