How The Cursor Indicates Modes - HP -28S Manual

Advanced scientific calculator
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Thus you can switch to any entry mode by pressing
[QJ
once or twice.
Here are some examples of using the
[QJ
key.
• Suppose you want to write a program that you'll execute only once
or twice. Press
[QJ
to select Alpha entry mode; key in the program
without program delimiters; press
1
ENTER
I
to execute the program;
press
.1
COMMAND
I
to return the program to the command line;
press
1
ENTER
I
to execute the program again.
• Suppose you want to purge several variables at once. Press
CD
to
start a list; press
[QJ
to select Alpha entry mode; press the USER
menu keys for the variables to be purged; press
1
ENTER
I
to put the
list on the stack; press
.1
PURGE
I.
• Suppose you're keying in a program, and you want to use the char-
acter .... in a name. Since Alpha entry mode is active, pressing
.8
would write the command " .... " surrounded by spaces. Press
[QJ
to
select Algebraic entry mode; press
.8;
press
[QJ [QJ
to return to
Alpha entry mode.
How the Cursor Indicates Modes
The appearance of the cursor indicates the current entry mode and
the current choice of Insert or Replace mode. The following table
shows the six possible combinations of entry mode and Insert or Re-
place mode.
Insert mode
Replace mode
Immediate entry mode
':1
0
Algebraic entry mode
"::?
§
Alpha entry mode
..
I
172
18: The Command Line

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