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9.
B.
(4) Line Select Keys - There are four
line
select
keys on each
side
of
the CRT display.
For reference,
the keys are defined
one through
four
from
top to bottom
on either
side of the CRT.
A left
and right
is also
assigned
to define
the side of the
CRT
on
which
the key is
located.
For example,
line select
key
'IL' is the top
left
line
select
key.
In
the case
of an index display,
the line
select keys can be used to
select submodes within the major modes.
In displays other than
index, the
line
select
keys
4L
and
4R
are
primarily
used
for
direct
access
to
other
modes in the FMS. Data can be copied to the
scratchpad
through
the use of a line select
key,
and once data
has
been entered into the scratchpad, either via line selection or
manual keyboard entry, it may be selected to any of the allowable
line select fields on
a given
page.
This
can
be
accomplished
simply
by depressing
the
key
adjacent
to
the
line
in which
you wish the
scratchpad data to be inserted.
(5) Function Keys - There are four function keys, and the function of
each is described in the following paragraphs:
(a)
Previous
(PREV)
and
NEXT
Page Keys
- The number
of pages
in a
particular
mode or menu display are shown in the upper right-
hand corner of the display. The format is 'AA/BB.' 'AA'
signifies the number of the current page that is displayed.
'BB' signifies the total number of pages that are available for
pilot viewing/modification. Page changes shall
be done
by
selecting
the
PREV
and
NEXT
keys.
When
in the
PLAN
mode, these
keys will increment or decrement the map center waypoint.
(b)
Clear
(CLR) Key -
The CLR key performs
the following
functions:
. When a message is present
in the
scratchpad,
pressing
the
CLR key shall delete that message.
.
When
an alphanumeric
entry
resides
in the scratchpad, one
character shall be cleared from the scratchpad (from right
to left) for each time the button is depressed.
c
When an alphanumeric entry resides in the scratchpad and the
CLR key is held
down, the first character is cleared within
100 ms.
After 400 ms have elapsed, characters will be
cleared at 100-ms intervals for as long as the key is held
down.
(c) Delete (DEL) Key - When there is no message in the scratchpad
and the DEL key is depressed, a "*DELETE*" will appear in the
scratchpad. This may now be line selected to delete waypoints
and other items displayed on the CDU. When there is a message
displayed, the delete operation will be inhibited.
22-14-00
Page 198=132
Aug 15/91
Use or disclosure of information cm thts page is subject to the restrictions on the title page of this document,
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