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CHAPTER 2
THE
EDITOR BASICS
The
following editor basics
are
described
in
this chapter:
• Keyboard
•
Cursor
•
End-of-file
(EOF)
marker
•
Screen-mode editing
•
AEDIT-86 display and menu format
•
Beep warning
•
Lines and line terminators
•
Printing and
non
printing characters
•
Tags
•
Repeat function (count)
•
Buffer
2. 1 Keyboard
The
keyboard
is
your interface with the editor.
It
is
a typewriter style. electronic
keyboard that supports the ASCI I character set.
Every keyboard character can be considered a command because every
key
causes
something to happen. Most keys are self-explanatory. Some, however, are configured
to
perform functions rather than enter characters. These keys
are
called function
keys; their names are enclosed
in
angle brackets throughout this manual.
ARROWS
CAPS
LOCK
or
TPWR
CONTROL
<CTRL)
<ESC)
<HOME)
<RETURN)
The
four keys labeled with directional arrows are the cursor
control keys <
LEFT),
<
RIGHT).
<
UP
)
,and
<
DOWN)
.
The
CAPS LOCK or
TPWR
key provides uppercase or lower-
case entry
of
alphabetic characters. This key functions with the
alphabetic keys only.
The
CONTROL
( <
CTRL)
) key changes the function of some
keys on the keyboard. (For example, to change the function of X,
hold down the <
CTRL)
key and press X).
The
<
ESC)
(escape) key exits modes. terminates commands,
and returns the editor to main command level.
The
<
HOME)
key allows faster cursor movement. Press an
arrow key followed
by
<
HOME)
to page backward or forward
through a file
or
to move rapidly
to
the beginning or end
of
a
line. <
HOME)
is also used to enter the reedit mode for line-
edit prompts.
The
<
RETURN)
key moves the cursor
to
the beginning
of
the
next line
in
INSERT
and
XCHANGE
modes and at main
command level.
It
also terminates line-edit prompt except for the
search commands
(-)FIND
and
(?)REPLACE.
The carriage
return/line feed character
is
displayed
in
text as a blank.
2-1