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Entering
and
Editing
3-2
In the Command Mode, the RUBOUT key deletes the last entered character each
time you press it, and backspaces the cursor on a CRT.
On a teletype, or with
RMX/SO
BASIC-SO,
RUBOUT echoes the last-entered character.
If
you then press
CR, the program statement
is
entered without the rubbed-out characters.
If
you
enter new characters and then press CR, the new characters appear in the line.
Suppose you enter 52 instead of 55.To erase the
2,
press RUBOUT:
30
A=8*52 •
30
A=8*5
•
If
you press RUBOUT again, the 5
is
deleted:
30
A=8*
•
To change
52
to
37,
press RUBOUT twice, then
3,
7:
30
A=8*52 •
30
A=8*
•
30
A=8*37 •
When using the Edit Mode, RUBOUT works somewhat differently. Refer to the
Editing
Program Text Section for details.
Control-R displays the line as corrected, still waiting for more input:
30
A--=8xx*522537 (Control-R)
A = 8*37
To cancel a line, simply press Control-X.
Editing Program
Text
Intel ISIS-II
BASIC-SO
has an Editing Mode used to change individual characters,
or entire lines. The Editing Mode has its own set
of
subcommands and syntax. Table
3-1
briefly describes each
of
the subcommands.
If
an illegal character
is
entered, the
terminal beeps and the character
is
ignored.
Table 3-1.
BASIC-80Editing Subcommands
Function
Syntax
To delete text:
[integer] 0
To insert text:
I character [character. .. ]
To
delete all characters to the right of the cursor
H character [character ... ]
and insert
text:
To insert characters at the end of the line:
X character [character ... ]
To search for a character:
[integer]
S character
To
delete all characters until specified character:
[integer] K character
To change next n characters to y characters:
[integer] C character [character ... ]
To restore
original line and leave Edit Mode:
Q
To restore original line and restart Edit Mode:
A
To print balance of line and restart Edit Mode: L
To leave Edit Mode and keep changes:
E
To
leave Edit Mode, keep changes, and print the
Carriage return
edited
line:
To delete unwanted characters:
Rubout
To place one logical statement line on two
or
more
Line Feed
physical lines:
To leave next n characters unchanged:
[integ.er] space
BASIC-SO