IBM 5110 Basic Introduction page 21

C "'~
/
C
' "
-,
(~:
C:
c
To correct the keying error and execute the problem, press the
following keys:
[]
There is one more way to correct a keying error. If you make several
errors halfway through the line, you can backspace the cursor to the
character following the last correct character and then press the ATTN
(attention) key. This causes everything from the cursor position to the
end of the line to be cleared from the display screen.
Because the data from the input line is not processed until the
EXECUTE key is pressed, you can visually verify any input before it is
processed. However, if you do press EXECUTE before you notice a
mistake, you can simply enter the input again, or you can use the
scroll down key . . to move the input back to the input
line and correct it. When the corrections have been made, press
EXECUTE again.
For example, you want to do the problem 135+280, but you entered
and executed 134+280. The display screen shows:
J
3
1
1,:--:::' > ::;::0
'-I·ll.!·
To correct the original input, press the scroll down key
a
three
times to get the original input back to the input line. The display
screen shows:
i ":;
LI .. ( ..
~:);.:::
n
·~~h~S
character is flashing.
You may now correct the error, and then process the data again by
pressing EXECUTE.
Introduction 17
C "'~
/
C
' "
-,
(~:
C:
c
To correct the keying error and execute the problem, press the
following keys:
[]
There is one more way to correct a keying error. If you make several
errors halfway through the line, you can backspace the cursor to the
character following the last correct character and then press the ATTN
(attention) key. This causes everything from the cursor position to the
end of the line to be cleared from the display screen.
Because the data from the input line is not processed until the
EXECUTE key is pressed, you can visually verify any input before it is
processed. However, if you do press EXECUTE before you notice a
mistake, you can simply enter the input again, or you can use the
scroll down key . . to move the input back to the input
line and correct it. When the corrections have been made, press
EXECUTE again.
For example, you want to do the problem 135+280, but you entered
and executed 134+280. The display screen shows:
J
3
1
1,:--:::' > ::;::0
'-I·ll.!·
To correct the original input, press the scroll down key
a
three
times to get the original input back to the input line. The display
screen shows:
i ":;
LI .. ( ..
~:);.:::
n
·~~h~S
character is flashing.
You may now correct the error, and then process the data again by
pressing EXECUTE.
Introduction 17